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Finding the Third Proportional to 3,936 and 9,084

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Solution

The third proportional to 3,936 and 9,084 is: 20,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936 : 9,084 = 9,084 : x
  2. Step 2: Convert to fraction form
    3,936/9,084 = 9,084/x
  3. Step 3: Cross multiply
    3,936x = 9,084 × 9,084
  4. Step 4: Simplify right side
    3,936x = 82,519,056
  5. Step 5: Solve for x
    x = 82,519,056/3,936
  6. Step 6: Final answer
    x = 20,965.21

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.