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Finding the Third Proportional to 8,391 and 9,282

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Solution

The third proportional to 8,391 and 9,282 is: 10,267.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391 : 9,282 = 9,282 : x
  2. Step 2: Convert to fraction form
    8,391/9,282 = 9,282/x
  3. Step 3: Cross multiply
    8,391x = 9,282 × 9,282
  4. Step 4: Simplify right side
    8,391x = 86,155,524
  5. Step 5: Solve for x
    x = 86,155,524/8,391
  6. Step 6: Final answer
    x = 10,267.61

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.