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Finding the Third Proportional to 4,040 and 6,242

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Solution

The third proportional to 4,040 and 6,242 is: 9,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,040 : 6,242 = 6,242 : x
  2. Step 2: Convert to fraction form
    4,040/6,242 = 6,242/x
  3. Step 3: Cross multiply
    4,040x = 6,242 × 6,242
  4. Step 4: Simplify right side
    4,040x = 38,962,564
  5. Step 5: Solve for x
    x = 38,962,564/4,040
  6. Step 6: Final answer
    x = 9,644.20

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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.