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Finding the Third Proportional to 8,762 and 17,920

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Solution

The third proportional to 8,762 and 17,920 is: 36,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762 : 17,920 = 17,920 : x
  2. Step 2: Convert to fraction form
    8,762/17,920 = 17,920/x
  3. Step 3: Cross multiply
    8,762x = 17,920 × 17,920
  4. Step 4: Simplify right side
    8,762x = 321,126,400
  5. Step 5: Solve for x
    x = 321,126,400/8,762
  6. Step 6: Final answer
    x = 36,649.90

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.