Finding the Fourth Proportional to 3,863,207.12, 5,331,288.31 and 2,121,037.11
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Solution
The fourth proportional to 3,863,207.12, 5,331,288.31 and 2,121,037.11 is: 2,927,065.52
Step by Step Solution
- Step 1: Write the proportion equation
3,863,207.12 : 5,331,288.31 = 2,121,037.11 : x - Step 2: Convert to fraction form
3,863,207.12/5,331,288.31 = 2,121,037.11/x - Step 3: Cross multiply
3,863,207.12x = 5,331,288.31 × 2,121,037.11 - Step 4: Simplify right side
3,863,207.12x = 11,307,860,344,316.59 - Step 5: Solve for x
x = 11,307,860,344,316.59/3,863,207.12 - Step 6: Final answer
x = 2,927,065.52
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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.