A Ratio of Partial Sums

Problem

An arithmetic sequence $\{a_n\}$ has partial sums $S_n$ , and

\frac{S_7 S_3}{S_4^2} = \frac{7}{4}.

Find $\dfrac{S_3}{S_4}$ .

Answer

Solution

Difficulty	5/10
Topics	Arithmetic Progression, sequences

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