1) x:8/9=3:4 ; 2) 12:7=9:x

Question

1) x:8/9=3:4 ; 2) 12:7=9:x

Answer 1

x:2,8=5:7
7x=14
x=2

6:5=9:x
6x=45
x=7.5

(x/8)*4=9*3
x/2=27
x=2*27
x=54