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Finding the Third Proportional to 8,842 and 12,785

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Solution

The third proportional to 8,842 and 12,785 is: 18,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,842 : 12,785 = 12,785 : x
  2. Step 2: Convert to fraction form
    8,842/12,785 = 12,785/x
  3. Step 3: Cross multiply
    8,842x = 12,785 × 12,785
  4. Step 4: Simplify right side
    8,842x = 163,456,225
  5. Step 5: Solve for x
    x = 163,456,225/8,842
  6. Step 6: Final answer
    x = 18,486.34

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.