Home / 3,902.62-5,385.48-2,223.90

Finding the Fourth Proportional to 3,902.62, 5,385.48 and 2,223.90

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Solution

The fourth proportional to 3,902.62, 5,385.48 and 2,223.90 is: 3,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.62 : 5,385.48 = 2,223.90 : x
  2. Step 2: Convert to fraction form
    3,902.62/5,385.48 = 2,223.90/x
  3. Step 3: Cross multiply
    3,902.62x = 5,385.48 × 2,223.90
  4. Step 4: Simplify right side
    3,902.62x = 11,976,768.97
  5. Step 5: Solve for x
    x = 11,976,768.97/3,902.62
  6. Step 6: Final answer
    x = 3,068.90

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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.