Home / 3,902.25-5,385.11-2,133.85

Finding the Fourth Proportional to 3,902.25, 5,385.11 and 2,133.85

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Solution

The fourth proportional to 3,902.25, 5,385.11 and 2,133.85 is: 2,944.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.25 : 5,385.11 = 2,133.85 : x
  2. Step 2: Convert to fraction form
    3,902.25/5,385.11 = 2,133.85/x
  3. Step 3: Cross multiply
    3,902.25x = 5,385.11 × 2,133.85
  4. Step 4: Simplify right side
    3,902.25x = 11,491,016.97
  5. Step 5: Solve for x
    x = 11,491,016.97/3,902.25
  6. Step 6: Final answer
    x = 2,944.72

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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.