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Finding the Fourth Proportional to 2,470.62, 3,705.39 and 738.66

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Solution

The fourth proportional to 2,470.62, 3,705.39 and 738.66 is: 1,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,470.62 : 3,705.39 = 738.66 : x
  2. Step 2: Convert to fraction form
    2,470.62/3,705.39 = 738.66/x
  3. Step 3: Cross multiply
    2,470.62x = 3,705.39 × 738.66
  4. Step 4: Simplify right side
    2,470.62x = 2,737,023.38
  5. Step 5: Solve for x
    x = 2,737,023.38/2,470.62
  6. Step 6: Final answer
    x = 1,107.83

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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.