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Finding the Third Proportional to 8,578 and 11,475

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Solution

The third proportional to 8,578 and 11,475 is: 15,350.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578 : 11,475 = 11,475 : x
  2. Step 2: Convert to fraction form
    8,578/11,475 = 11,475/x
  3. Step 3: Cross multiply
    8,578x = 11,475 × 11,475
  4. Step 4: Simplify right side
    8,578x = 131,675,625
  5. Step 5: Solve for x
    x = 131,675,625/8,578
  6. Step 6: Final answer
    x = 15,350.39

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.