Home / 3,902.52-5,385.20-2,223.87

Finding the Fourth Proportional to 3,902.52, 5,385.20 and 2,223.87

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Solution

The fourth proportional to 3,902.52, 5,385.20 and 2,223.87 is: 3,068.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.52 : 5,385.20 = 2,223.87 : x
  2. Step 2: Convert to fraction form
    3,902.52/5,385.20 = 2,223.87/x
  3. Step 3: Cross multiply
    3,902.52x = 5,385.20 × 2,223.87
  4. Step 4: Simplify right side
    3,902.52x = 11,975,984.72
  5. Step 5: Solve for x
    x = 11,975,984.72/3,902.52
  6. Step 6: Final answer
    x = 3,068.78

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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.