Home / 5,149.24-7,717.98-3,921.78

Finding the Fourth Proportional to 5,149.24, 7,717.98 and 3,921.78

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Solution

The fourth proportional to 5,149.24, 7,717.98 and 3,921.78 is: 5,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.24 : 7,717.98 = 3,921.78 : x
  2. Step 2: Convert to fraction form
    5,149.24/7,717.98 = 3,921.78/x
  3. Step 3: Cross multiply
    5,149.24x = 7,717.98 × 3,921.78
  4. Step 4: Simplify right side
    5,149.24x = 30,268,263.25
  5. Step 5: Solve for x
    x = 30,268,263.25/5,149.24
  6. Step 6: Final answer
    x = 5,878.20

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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.