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Finding the Third Proportional to 8,394 and 12,587

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Solution

The third proportional to 8,394 and 12,587 is: 18,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394 : 12,587 = 12,587 : x
  2. Step 2: Convert to fraction form
    8,394/12,587 = 12,587/x
  3. Step 3: Cross multiply
    8,394x = 12,587 × 12,587
  4. Step 4: Simplify right side
    8,394x = 158,432,569
  5. Step 5: Solve for x
    x = 158,432,569/8,394
  6. Step 6: Final answer
    x = 18,874.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.