Question

a:b=1/2:3/8, b:c=1/3:5/9, c:d=5/6:3/4, a:b:c:d=?

Answer 1

we have to convert each term in other in the above I have converted a,c,d interns of b

Answer 2

The answer to your question is

a:b:c:d= 8:6:10:9