Question

if a:b=4:7 b:c=7:9 c:d=6:5 find a:b:c:d

Answer 1

a:b:c:d = 4:7:3:5 i have doubt about this answer

Answer 2

a:b = 4:7

b:c = 7:9

c:d = 6:5

Lets make b:c and c:d equal first

2*b:c = 14:18

3*c:d = 18:15

So, we get b:c:d = 14:18:15

Now lets make a:b and b:c equal

2*a:b = 4:7 = 8:14

2*b:c = 7:9 = 14:18

So, we get a:b:c = 8:14:18

Then, a:b:c:d = 8:14:18:15