Finding the Fourth Proportional to 3,872,857.68, 5,344,134.12 and 2,153,700.24
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Solution
The fourth proportional to 3,872,857.68, 5,344,134.12 and 2,153,700.24 is: 2,971,878.62
Step by Step Solution
- Step 1: Write the proportion equation
3,872,857.68 : 5,344,134.12 = 2,153,700.24 : x - Step 2: Convert to fraction form
3,872,857.68/5,344,134.12 = 2,153,700.24/x - Step 3: Cross multiply
3,872,857.68x = 5,344,134.12 × 2,153,700.24 - Step 4: Simplify right side
3,872,857.68x = 11,509,662,936,836.19 - Step 5: Solve for x
x = 11,509,662,936,836.19/3,872,857.68 - Step 6: Final answer
x = 2,971,878.62
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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.