SOLUTION: Write out the terms of the geometric sequence that satisfies the given conditions. a4=5, a5=15, n=5 what does a1, a2, and a3 = ?

Algebra ->  Sequences-and-series -> SOLUTION: Write out the terms of the geometric sequence that satisfies the given conditions. a4=5, a5=15, n=5 what does a1, a2, and a3 = ?      Log On


   

Question 1114490: Write out the terms of the geometric sequence that satisfies the given conditions.
a4=5, a5=15, n=5
what does a1, a2, and a3 = ?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Successive ratio is 15%2F5=highlight_green%283%29.

You can find the terms a%5B1%5D, a%5B2%5D, and a%5B3%5D, through division using the common ratio.

THINK:
a%5B4%5D%2A3=a%5B5%5D
5%2A3=15
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a%5B3%5D%2A3=a%5B4%5D
a%5B3%5D%2A3=5
a%5B3%5D=5%2F3
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You can figure the other two terms.