To find the common ratio of the given sequence, we need to analyze the second values of each pair in the sequence: 3, 3.6, 4.32, and 5.184.
The common ratio \( r \) can be found by dividing each term by the previous term:
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For the first two terms: \[ r = \frac{3.6}{3} = 1.2 \]
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For the second and third terms: \[ r = \frac{4.32}{3.6} = 1.2 \]
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For the third and fourth terms: \[ r = \frac{5.184}{4.32} = 1.2 \]
Since the ratio is consistent at \( 1.2 \) for each step, we conclude that the common ratio of the sequence is \( 1.2 \).