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Finding the Third Proportional to 3,943 and 7,958

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Solution

The third proportional to 3,943 and 7,958 is: 16,061.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943 : 7,958 = 7,958 : x
  2. Step 2: Convert to fraction form
    3,943/7,958 = 7,958/x
  3. Step 3: Cross multiply
    3,943x = 7,958 × 7,958
  4. Step 4: Simplify right side
    3,943x = 63,329,764
  5. Step 5: Solve for x
    x = 63,329,764/3,943
  6. Step 6: Final answer
    x = 16,061.31

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.