Question

In a geometric sequence, how does one find the common ratio? I have the 3rd and 5th numbers...

Answer 1

3rd number is 12, 5th number is 16/3

Answer 2

common ratio = r = next term / current term
so, u can say r = 2nd term / 1st term = 3rd term/ 2nd term .....and so on

Answer 3

here, r= 4th term / 3rd term = 5th term / 4th term
from this, u get r^2 = 5th term / 3rd term
get that ?

Answer 4

I think so, thanks :) I'll try it now

Answer 5

yeah, ask if u get stuck, or if u have any doubts....

Answer 6

I've worked it out to be 2/3... I think that's right. Thanks for your help :)

Answer 7

thats correct. welcome ^_^