Finding the Fourth Proportional to 3,943,651.12, 5,442,242.17 and 2,132,815.12
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Solution
The fourth proportional to 3,943,651.12, 5,442,242.17 and 2,132,815.12 is: 2,943,286.82
Step by Step Solution
- Step 1: Write the proportion equation
3,943,651.12 : 5,442,242.17 = 2,132,815.12 : x - Step 2: Convert to fraction form
3,943,651.12/5,442,242.17 = 2,132,815.12/x - Step 3: Cross multiply
3,943,651.12x = 5,442,242.17 × 2,132,815.12 - Step 4: Simplify right side
3,943,651.12x = 11,607,296,354,334.36 - Step 5: Solve for x
x = 11,607,296,354,334.36/3,943,651.12 - Step 6: Final answer
x = 2,943,286.82
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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.