Pakistan, who lead the series 2-1, remained unchanged from the side which won the third match in Sharjah by 113 runs on Sunday.
Sri Lanka made three changes from the last match, bringing in Kithruwan Vithanage, Ashan Priyanjan and Suranga Lakmal in place of Dimuth Karunaratne, Thisara Perera and Seekkuge Prasanna.
Pakistan won the first match by 11 runs in Sharjah while Sri Lanka won the second in Dubai by two wickets.
Teams:
Pakistan: Misbah-ul-Haq (capt), Mohammad Hafeez, Sharjeel Khan, Ahmed Shehzad, Sohaib Maqsood, Umar Akmal, Shahid Afridi, Saeed Ajmal, Junaid Khan, Umar Gul, Bilawal Bhatti. Sri Lanka: Angelo Mathews (capt), Tillakaratne Dilshan, Kusal Perera, Kumar Sangakkara, Dinesh Chandimal, Lasith Malinga, Kithruwan Vithanage, Nuwan Kulasekara, Sachithra Senanayake, Ashan Priyanjan, Suranga Lakmal.
Umpires: Ahsan Raza (PAK) and Richard Illingworth (ENG)
Tv umpire: Johan Cloete (RSA)
Match referee: Javagal Srinath (IND)