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Finding the Third Proportional to 4,380 and 9,624

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Solution

The third proportional to 4,380 and 9,624 is: 21,146.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,380 : 9,624 = 9,624 : x
  2. Step 2: Convert to fraction form
    4,380/9,624 = 9,624/x
  3. Step 3: Cross multiply
    4,380x = 9,624 × 9,624
  4. Step 4: Simplify right side
    4,380x = 92,621,376
  5. Step 5: Solve for x
    x = 92,621,376/4,380
  6. Step 6: Final answer
    x = 21,146.43

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.