Shoaib Malik and Babar Azam made short work of Pakistan's chase after Hasan Ali celebrated becoming the world's top-ranked ODI bowler by ripping through Sri Lanka.
Hasan has gone from strength to strength since playing a key role in Pakistan's stunning Champions Trophy win and he took 3-37 to set the nominal hosts in Sharjah on their way to an eighth straight 50-over win.
Sri Lanka are also on a sequence of results in this format, although one much more painful, and they never looked like preventing a losing run slipping to an 11th match after being bowled out for 173.
After Hasan's heroics, Babar and Malik each scored 69 not out, putting an unbeaten 119 runs on for the fourth wicket and sealing victory and putting Pakistan in sight of a series whitewash in the fifth and final contest, with Sri Lanka hoping to avoid successive blowouts in ODIs.
Sri Lanka's innings was sapped of momentum from the off, with Upul Tharanga (0) and Niroshan Dickwella (22) falling in the powerplay.
Lahiru Thirimanne scored 62 but his resistance was the only real nuisance for Pakistan, who twice took two wickets in an over - Dinesh Chandimal (16) and Sadeera Samarawickrama (0) falling in the 11th, while Shadab Khan (2-29) enjoyed immediate success, snaring Seekkuge Prasanna (5) and Thisara Perera first ball with his opening two deliveries of the match.
Sri Lanka were 99-7 at that point, with only useful cameos from Akila Dananjaya (18) and Suranga Lakmal (23 not out) alongside Thirimanne helping them to something resembling a decent target.
It proved wholly insufficient, however, Pakistan riding out the cheap dismissals of Imam-ul-Haq (2), Mohammad Hafeez (9) and Fakhar Zaman (17).
Babar and Malik took their time to get going and the latter had a life on three when a chip to mid-on burst the hands of Thisara.
Malik was back in the groove by the time he launched Dananjaya 93 metres over midwicket and Sri Lanka's limp performance soon extended to their bowling and fielding as Pakistan were allowed to calmly chip away at their target.
With victory in sight, Malik delighted the crowd with a sumptuous blast over extra cover for another maximum, and his third six finished the match as Pakistan sealed the win with 11 overs unused.
|Mourinho needs time to fix Manchester United - Veron|
|Southgate sees progress as England reward loyal support|
|Miller hungry to ´knock out a Brit´ after Dinu demolition|
|Yasir, Hasan put Pakistan in control with five-wicket hauls|
|England´s resilience delights Kane as Three Lions secure Nations League Finals spot|
|Kane proves Nations League importance to England in Wembley decider|
|Muller, Hummels still important for Germany, says Low|
|Tevez in line for start in Copa Libertadores final second leg|
|England 2 Croatia 1: Kane able to secure Nations League Finals spot|
|It doesn´t sound real - Molinari stunned by 2018 exploits|
|Wales legend Thomas victim of alleged homophobic attack|
|Marquez crashes again as Dovizioso wins rain-interrupted Valencia GP|
|Warriors owner denies taking sides following Green-Durant spat|
|Alisson can become a global great, says Dida|
|The Sunday Seven - 7 Key Opta facts for NFL Week 11|
|Teen driver ´fine´ after sustaining spinal fracture in F3 crash|
|Willett wins first title since Masters triumph, Molinari tops Race to Dubai standings|
|Southgate overcomes ´stigma´ of being sacked to thrive with England|
|Anthony to Lakers ´not a question for myself´, says LeBron James|
|Warriors´ Stephen Curry staying ´cautious´ with injury recovery|
|Gunter hopes Bale can help family jet in to witness Wales record|
|Root pleased to practice what he preached|
|Tianjin Quanjian threaten action after Modeste returns to Cologne|
|I had to stop Kemba getting 70! – Jimmy Butler reflects on dramatic game-winner|
|Molinari wins Race to Dubai|
|Rooney: Some ex-players can´t come to terms with England doing well|
|In a spin: England´s win against Sri Lanka sets new record|
|Ogier wins sixth straight WRC title|
|Rogic, Kruse to miss Socceroos´ Lebanon friendly|
|Joerger has Kings´ ´full support´, says GM Divac|
|England seal series win over Sri Lanka|
|Butler´s heroics spoil Walker´s 60-point game as 76ers beat Hornets|
|He´s an honest guy – Djokovic defends Zverev after Finals controversy|
|Bonucci boos a ´mistake´ by fans, says Mancinima|
|Ronaldo still part of Portugal squad – Santos|
|Santos satisfied as Portugal reach Nations League Finals|
|Howell holds onto RSM Classic lead|
|McLeish optimistic as Scotland zero in on Nations League promotion|
|Luis Enrique rejects criticism of Spain star De Gea|
|Schmidt dismisses Hansen´s Ireland World Cup favourites claim as ´banter´|
|There are always imbeciles – Bonucci hits back at fans after frosty San Siro reception|
|Portugal draw ´a step forward´ despite poor finishing – Mancini|
|Ireland were just too good - Read|
|Thomas at the double as France end losing streak|
|Albania 0 Scotland 4: Forrest double sets up promotion showdown|
|Italy 0 Portugal 0: European champions outplayed but secure Finals spot|
|Sensational Djokovic marches into final|
|Stander lauds Ireland´s ´unreal´ defence as All Blacks are thwarted|
|Dazzling Ireland claim historic All Blacks scalp in Dublin|
|Federer unimpressed with Zverev boos|
|Let´s get it on! Cheika relishing England clash|
|Croatia coach Dalic to speak with Lovren over Ramos remarks|
|Xhaka puts improved form down to ´freak´ Emery|
|De Gea not lacking confidence, says Spain´s Saul|
|Jordan goalkeeper scores from own penalty area in friendly against India|
|Pollard leads Springboks to Murrayfield victory|
|Fired-up Japan taught England a great lesson - Jones|
|Sarries leave it late to down Sale, Bath and Saints win|
|O´Shea fumes at disallowed Italy try|
|Southgate welcomes England selection quandary|
|Reaching Rooney´s England goals record ´definitely possible´ – Kane|
|Debut try for Cokanasiga as England rally to avoid Japan upset|
|Wembley will galvanise ´tired´ Croatia, insists Dalic|
|Zverev apologises for tie-break controversy amid O2 Arena heckles|
|Marquez happy with fifth after damaging shoulder in Valencia|
|Wales crush Tonga in Cardiff|
|Germany should keep faith in old guard - Bierhoff|
|Injured Lukaku to miss Belgium´s Nations League decider|
|Zverev knocks out Federer to reach maiden ATP Finals showpiece|
|Koroibete double maintains Australia´s 100 per cent record against Italy|