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Finding the Third Proportional to 3,720 and 6,624

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Solution

The third proportional to 3,720 and 6,624 is: 11,794.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720 : 6,624 = 6,624 : x
  2. Step 2: Convert to fraction form
    3,720/6,624 = 6,624/x
  3. Step 3: Cross multiply
    3,720x = 6,624 × 6,624
  4. Step 4: Simplify right side
    3,720x = 43,877,376
  5. Step 5: Solve for x
    x = 43,877,376/3,720
  6. Step 6: Final answer
    x = 11,794.99

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.