Home / 5,156.11-7,734.77-3,865.78

Finding the Fourth Proportional to 5,156.11, 7,734.77 and 3,865.78

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Solution

The fourth proportional to 5,156.11, 7,734.77 and 3,865.78 is: 5,799.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.11 : 7,734.77 = 3,865.78 : x
  2. Step 2: Convert to fraction form
    5,156.11/7,734.77 = 3,865.78/x
  3. Step 3: Cross multiply
    5,156.11x = 7,734.77 × 3,865.78
  4. Step 4: Simplify right side
    5,156.11x = 29,900,919.17
  5. Step 5: Solve for x
    x = 29,900,919.17/5,156.11
  6. Step 6: Final answer
    x = 5,799.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.