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Finding the Third Proportional to 8,612 and 11,636

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Solution

The third proportional to 8,612 and 11,636 is: 15,721.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612 : 11,636 = 11,636 : x
  2. Step 2: Convert to fraction form
    8,612/11,636 = 11,636/x
  3. Step 3: Cross multiply
    8,612x = 11,636 × 11,636
  4. Step 4: Simplify right side
    8,612x = 135,396,496
  5. Step 5: Solve for x
    x = 135,396,496/8,612
  6. Step 6: Final answer
    x = 15,721.84

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.