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Finding the Third Proportional to 8,928 and 12,080

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Solution

The third proportional to 8,928 and 12,080 is: 16,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928 : 12,080 = 12,080 : x
  2. Step 2: Convert to fraction form
    8,928/12,080 = 12,080/x
  3. Step 3: Cross multiply
    8,928x = 12,080 × 12,080
  4. Step 4: Simplify right side
    8,928x = 145,926,400
  5. Step 5: Solve for x
    x = 145,926,400/8,928
  6. Step 6: Final answer
    x = 16,344.80

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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.