3:8 = n:32
you multiply the ratio 3:8 by 4 to get the 32 female performers, so you multiply the 3 by 4 to get the variable n, which is how many men there are. so, 3×4=12
3:8 × 4:4 = 12:32
there are 12 men in the recital.
hope that helped and wasn't too confusing!
