Home / 3,468.78-5,198.36-1,906.90

Finding the Fourth Proportional to 3,468.78, 5,198.36 and 1,906.90

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Solution

The fourth proportional to 3,468.78, 5,198.36 and 1,906.90 is: 2,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.78 : 5,198.36 = 1,906.90 : x
  2. Step 2: Convert to fraction form
    3,468.78/5,198.36 = 1,906.90/x
  3. Step 3: Cross multiply
    3,468.78x = 5,198.36 × 1,906.90
  4. Step 4: Simplify right side
    3,468.78x = 9,912,752.68
  5. Step 5: Solve for x
    x = 9,912,752.68/3,468.78
  6. Step 6: Final answer
    x = 2,857.71

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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.