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Finding the Third Proportional to 7,469 and 9,439

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Solution

The third proportional to 7,469 and 9,439 is: 11,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,469 : 9,439 = 9,439 : x
  2. Step 2: Convert to fraction form
    7,469/9,439 = 9,439/x
  3. Step 3: Cross multiply
    7,469x = 9,439 × 9,439
  4. Step 4: Simplify right side
    7,469x = 89,094,721
  5. Step 5: Solve for x
    x = 89,094,721/7,469
  6. Step 6: Final answer
    x = 11,928.60

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.