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Finding the Third Proportional to 4,122 and 6,384

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Solution

The third proportional to 4,122 and 6,384 is: 9,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122 : 6,384 = 6,384 : x
  2. Step 2: Convert to fraction form
    4,122/6,384 = 6,384/x
  3. Step 3: Cross multiply
    4,122x = 6,384 × 6,384
  4. Step 4: Simplify right side
    4,122x = 40,755,456
  5. Step 5: Solve for x
    x = 40,755,456/4,122
  6. Step 6: Final answer
    x = 9,887.30

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.