9:6:8
a=3/2bb=3/4ca=3/4c×3/2=9/8ca:b:c=9/8c:3/4c:c=9/8:3/4:1=9:6:8
因为,a:b=3:2=9:6b:c=3:4=6:8所以,a:c:b=9:6:8
1:3:4