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Finding the Third Proportional to 3,936 and 8,760

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Solution

The third proportional to 3,936 and 8,760 is: 19,496.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936 : 8,760 = 8,760 : x
  2. Step 2: Convert to fraction form
    3,936/8,760 = 8,760/x
  3. Step 3: Cross multiply
    3,936x = 8,760 × 8,760
  4. Step 4: Simplify right side
    3,936x = 76,737,600
  5. Step 5: Solve for x
    x = 76,737,600/3,936
  6. Step 6: Final answer
    x = 19,496.34

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.