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Finding the Fourth Proportional to 3,679.83, 5,511.24 and 3,351.78

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Solution

The fourth proportional to 3,679.83, 5,511.24 and 3,351.78 is: 5,019.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.83 : 5,511.24 = 3,351.78 : x
  2. Step 2: Convert to fraction form
    3,679.83/5,511.24 = 3,351.78/x
  3. Step 3: Cross multiply
    3,679.83x = 5,511.24 × 3,351.78
  4. Step 4: Simplify right side
    3,679.83x = 18,472,464.01
  5. Step 5: Solve for x
    x = 18,472,464.01/3,679.83
  6. Step 6: Final answer
    x = 5,019.92

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1.5x scale

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.