Finding the Fourth Proportional to 4,957.20, 6,840.99 and 2,861.19
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Solution
The fourth proportional to 4,957.20, 6,840.99 and 2,861.19 is: 3,948.47
Step by Step Solution
- Step 1: Write the proportion equation
4,957.20 : 6,840.99 = 2,861.19 : x - Step 2: Convert to fraction form
4,957.20/6,840.99 = 2,861.19/x - Step 3: Cross multiply
4,957.20x = 6,840.99 × 2,861.19 - Step 4: Simplify right side
4,957.20x = 19,573,372.18 - Step 5: Solve for x
x = 19,573,372.18/4,957.20 - Step 6: Final answer
x = 3,948.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.