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Finding the Fourth Proportional to 10,604.90, 15,902.29 and 3,939.28

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Solution

The fourth proportional to 10,604.90, 15,902.29 and 3,939.28 is: 5,907.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,604.90 : 15,902.29 = 3,939.28 : x
  2. Step 2: Convert to fraction form
    10,604.90/15,902.29 = 3,939.28/x
  3. Step 3: Cross multiply
    10,604.90x = 15,902.29 × 3,939.28
  4. Step 4: Simplify right side
    10,604.90x = 62,643,572.95
  5. Step 5: Solve for x
    x = 62,643,572.95/10,604.90
  6. Step 6: Final answer
    x = 5,907.04

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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.