Finding the Fourth Proportional to 3,972,839.20, 5,961,721.20 and 2,080,938.40
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Solution
The fourth proportional to 3,972,839.20, 5,961,721.20 and 2,080,938.40 is: 3,122,697.38
Step by Step Solution
- Step 1: Write the proportion equation
3,972,839.20 : 5,961,721.20 = 2,080,938.40 : x - Step 2: Convert to fraction form
3,972,839.20/5,961,721.20 = 2,080,938.40/x - Step 3: Cross multiply
3,972,839.20x = 5,961,721.20 × 2,080,938.40 - Step 4: Simplify right side
3,972,839.20x = 12,405,974,575,174.08 - Step 5: Solve for x
x = 12,405,974,575,174.08/3,972,839.20 - Step 6: Final answer
x = 3,122,697.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.