Home / 5,135.20-7,084.68-3,367.78

Finding the Fourth Proportional to 5,135.20, 7,084.68 and 3,367.78

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Solution

The fourth proportional to 5,135.20, 7,084.68 and 3,367.78 is: 4,646.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.20 : 7,084.68 = 3,367.78 : x
  2. Step 2: Convert to fraction form
    5,135.20/7,084.68 = 3,367.78/x
  3. Step 3: Cross multiply
    5,135.20x = 7,084.68 × 3,367.78
  4. Step 4: Simplify right side
    5,135.20x = 23,859,643.61
  5. Step 5: Solve for x
    x = 23,859,643.61/5,135.20
  6. Step 6: Final answer
    x = 4,646.29

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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.