Finding the Fourth Proportional to 3,940,791.62, 5,438,291 and 2,129,955.62
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Solution
The fourth proportional to 3,940,791.62, 5,438,291 and 2,129,955.62 is: 2,939,337.98
Step by Step Solution
- Step 1: Write the proportion equation
3,940,791.62 : 5,438,291 = 2,129,955.62 : x - Step 2: Convert to fraction form
3,940,791.62/5,438,291 = 2,129,955.62/x - Step 3: Cross multiply
3,940,791.62x = 5,438,291 × 2,129,955.62 - Step 4: Simplify right side
3,940,791.62x = 11,583,318,478,645.42 - Step 5: Solve for x
x = 11,583,318,478,645.42/3,940,791.62 - Step 6: Final answer
x = 2,939,337.98
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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.