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Finding the Third Proportional to 3,927 and 7,926

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Solution

The third proportional to 3,927 and 7,926 is: 15,997.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927 : 7,926 = 7,926 : x
  2. Step 2: Convert to fraction form
    3,927/7,926 = 7,926/x
  3. Step 3: Cross multiply
    3,927x = 7,926 × 7,926
  4. Step 4: Simplify right side
    3,927x = 62,821,476
  5. Step 5: Solve for x
    x = 62,821,476/3,927
  6. Step 6: Final answer
    x = 15,997.32

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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.