Home / 3,789.90-5,229.87-2,110.86

Finding the Fourth Proportional to 3,789.90, 5,229.87 and 2,110.86

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Solution

The fourth proportional to 3,789.90, 5,229.87 and 2,110.86 is: 2,912.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.90 : 5,229.87 = 2,110.86 : x
  2. Step 2: Convert to fraction form
    3,789.90/5,229.87 = 2,110.86/x
  3. Step 3: Cross multiply
    3,789.90x = 5,229.87 × 2,110.86
  4. Step 4: Simplify right side
    3,789.90x = 11,039,523.39
  5. Step 5: Solve for x
    x = 11,039,523.39/3,789.90
  6. Step 6: Final answer
    x = 2,912.88

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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.