Asked by Ceej

What number must be added to each of 4, 7, 12 so that the resulting numbers form a geometric sequence?
Answered by Reiny
how about solving:

(7+x)/(4+x) = (12+x)/(7+x)

Answered by Steve
You want a constant ratio, so

(7+x)/(4+x) = (12+x)/(7+x)
x = ?
Answered by Anonymous
1/2
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