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Finding the Fourth Proportional to 3,472.70, 5,207.96 and 1,007.69

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Solution

The fourth proportional to 3,472.70, 5,207.96 and 1,007.69 is: 1,511.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,472.70 : 5,207.96 = 1,007.69 : x
  2. Step 2: Convert to fraction form
    3,472.70/5,207.96 = 1,007.69/x
  3. Step 3: Cross multiply
    3,472.70x = 5,207.96 × 1,007.69
  4. Step 4: Simplify right side
    3,472.70x = 5,247,978.13
  5. Step 5: Solve for x
    x = 5,247,978.13/3,472.70
  6. Step 6: Final answer
    x = 1,511.21

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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.