Home / 5,424.46-8,139.78-2,502.78

Finding the Fourth Proportional to 5,424.46, 8,139.78 and 2,502.78

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Solution

The fourth proportional to 5,424.46, 8,139.78 and 2,502.78 is: 3,755.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.46 : 8,139.78 = 2,502.78 : x
  2. Step 2: Convert to fraction form
    5,424.46/8,139.78 = 2,502.78/x
  3. Step 3: Cross multiply
    5,424.46x = 8,139.78 × 2,502.78
  4. Step 4: Simplify right side
    5,424.46x = 20,372,078.59
  5. Step 5: Solve for x
    x = 20,372,078.59/5,424.46
  6. Step 6: Final answer
    x = 3,755.60

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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.