Home / 3,997.38-5,516.40-2,229.12

Finding the Fourth Proportional to 3,997.38, 5,516.40 and 2,229.12

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Solution

The fourth proportional to 3,997.38, 5,516.40 and 2,229.12 is: 3,076.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.38 : 5,516.40 = 2,229.12 : x
  2. Step 2: Convert to fraction form
    3,997.38/5,516.40 = 2,229.12/x
  3. Step 3: Cross multiply
    3,997.38x = 5,516.40 × 2,229.12
  4. Step 4: Simplify right side
    3,997.38x = 12,296,717.57
  5. Step 5: Solve for x
    x = 12,296,717.57/3,997.38
  6. Step 6: Final answer
    x = 3,076.19

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.