8 vs. 3,4,5
Without a drawing, there are three possible answers. You must decide which side of the 3,4,5 is CORRESPONDING to the known side that is 8.
If it is 3, then (8/3)*3, (8/3)*4, (8/3)*5.
If it is 4, then (8/4)*3, (8/4)*4, (8/4)*5.
If it is 5, then (8/5)*3, (8/5)*4, (8/5)*5.