Home / 3,789.78-5,229.57-2,110.92

Finding the Fourth Proportional to 3,789.78, 5,229.57 and 2,110.92

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Solution

The fourth proportional to 3,789.78, 5,229.57 and 2,110.92 is: 2,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.78 : 5,229.57 = 2,110.92 : x
  2. Step 2: Convert to fraction form
    3,789.78/5,229.57 = 2,110.92/x
  3. Step 3: Cross multiply
    3,789.78x = 5,229.57 × 2,110.92
  4. Step 4: Simplify right side
    3,789.78x = 11,039,203.90
  5. Step 5: Solve for x
    x = 11,039,203.90/3,789.78
  6. Step 6: Final answer
    x = 2,912.89

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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.