May butt in, Mr F.

The poster, blackdove, titled his post "not sure what kind of problem".

I played around with his post and I got a numerical result. May I post it?

givens:

(a/x) = (b/k)

(a/2b) = d(3x/k)

problem;

Find the vaule of "d"

From (a/x) = (b/k),

cross multiply,

bx = ak

From the (a /2b) = d(3x /k),

a/ 2b = 3dx /k

Cross multiply,

2b(3dx) = ak

6bdx = ak

ak = ak,

bx = 6bdx

1 = 6d

d = 1/6 --------answer.