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Finding the Third Proportional to 2,218 and 3,962

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Solution

The third proportional to 2,218 and 3,962 is: 7,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218 : 3,962 = 3,962 : x
  2. Step 2: Convert to fraction form
    2,218/3,962 = 3,962/x
  3. Step 3: Cross multiply
    2,218x = 3,962 × 3,962
  4. Step 4: Simplify right side
    2,218x = 15,697,444
  5. Step 5: Solve for x
    x = 15,697,444/2,218
  6. Step 6: Final answer
    x = 7,077.30

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.