Aidan Fraly scored 25 points and added seven rebounds as the Falcons rallied to beat Fort.
AJ Dixson added 12 and Kameron Osborn had 10 for the Falcons.
James Husband Jr. led Fort with 17 points, and Kahlil Singleton had 15, Justin Vernon had 10 rebounds.
The win kept Prairie within one game of Kelso in the 3A Greater St. Helens League with two to play.
PRAIRIE 57, FORT VANCOUVER 53
PRAIRIE — AJ Dixson 12, Zeke Dixson 6, Aidan Fraly 25, Mark Frazier 2, Brady Gagnon 0, Thomas Hapgood 0, Bronson King 2, Gabe Lilly 0, Kameron Osborn 10, Reece Walling 0. Totals 18-42 (1-9) 20-27 57.