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Finding the Third Proportional to 8,860 and 12,160

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Solution

The third proportional to 8,860 and 12,160 is: 16,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860 : 12,160 = 12,160 : x
  2. Step 2: Convert to fraction form
    8,860/12,160 = 12,160/x
  3. Step 3: Cross multiply
    8,860x = 12,160 × 12,160
  4. Step 4: Simplify right side
    8,860x = 147,865,600
  5. Step 5: Solve for x
    x = 147,865,600/8,860
  6. Step 6: Final answer
    x = 16,689.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.