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Finding the Third Proportional to 7,691 and 10,997.75

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Solution

The third proportional to 7,691 and 10,997.75 is: 15,726.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691 : 10,997.75 = 10,997.75 : x
  2. Step 2: Convert to fraction form
    7,691/10,997.75 = 10,997.75/x
  3. Step 3: Cross multiply
    7,691x = 10,997.75 × 10,997.75
  4. Step 4: Simplify right side
    7,691x = 120,950,505.06
  5. Step 5: Solve for x
    x = 120,950,505.06/7,691
  6. Step 6: Final answer
    x = 15,726.24

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.