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Finding the Third Proportional to 3,381 and 4,979

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Solution

The third proportional to 3,381 and 4,979 is: 7,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381 : 4,979 = 4,979 : x
  2. Step 2: Convert to fraction form
    3,381/4,979 = 4,979/x
  3. Step 3: Cross multiply
    3,381x = 4,979 × 4,979
  4. Step 4: Simplify right side
    3,381x = 24,790,441
  5. Step 5: Solve for x
    x = 24,790,441/3,381
  6. Step 6: Final answer
    x = 7,332.28

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.