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Finding the Third Proportional to 3,918.38 and 5,977.97

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Solution

The third proportional to 3,918.38 and 5,977.97 is: 9,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.38 : 5,977.97 = 5,977.97 : x
  2. Step 2: Convert to fraction form
    3,918.38/5,977.97 = 5,977.97/x
  3. Step 3: Cross multiply
    3,918.38x = 5,977.97 × 5,977.97
  4. Step 4: Simplify right side
    3,918.38x = 35,736,110.38
  5. Step 5: Solve for x
    x = 35,736,110.38/3,918.38
  6. Step 6: Final answer
    x = 9,120.14

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.