Monthly savings were 4000, 4400, 4840, and 5324. Estimate the savings in the sixth month if the same trend continues.
6442
Check the pattern between consecutive months: 4400 ÷ 4000 = 1.1, 4840 ÷ 4400 = 1.1 and 5324 ÷ 4840 = 1.1.
So the savings grow by 10% every month, i.e. each term is 1.1 times the previous one.
Fifth month: 5324 × 1.1 = 5856.4.
Sixth month: 5856.4 × 1.1 = 6442.04 ≈ 6442 (equivalently, 4000 × 1.15 = 6442.04).
Hence, the estimated savings in the sixth month are 6442.
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