What is the common ratio of this geometric sequence 1.1, 4.4, 17.6, 70.4,...?

2 Answers
Apr 23, 2016

Answer:

4

Explanation:

since
#4=4.4/1.2=17.6/4.4=70.4/17.6=---#

Apr 23, 2016

Answer:

r = 4

Explanation:

For the standard geometric sequence:

# a,ar,ar^2,ar^3, ........ , ar^(n-1) #

where a represents the 1st term , r the common ratio.

# r = (ar)/a=(ar^2)/(ar) =........ (ar^n)/(ar^(n-1)) #

For the sequence here , therefore

# r = 4.4/1.1 = 17.6/4.4 = 4 #