Home / 3,923.52-5,414.92-2,155.30

Finding the Fourth Proportional to 3,923.52, 5,414.92 and 2,155.30

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Solution

The fourth proportional to 3,923.52, 5,414.92 and 2,155.30 is: 2,974.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.52 : 5,414.92 = 2,155.30 : x
  2. Step 2: Convert to fraction form
    3,923.52/5,414.92 = 2,155.30/x
  3. Step 3: Cross multiply
    3,923.52x = 5,414.92 × 2,155.30
  4. Step 4: Simplify right side
    3,923.52x = 11,670,777.08
  5. Step 5: Solve for x
    x = 11,670,777.08/3,923.52
  6. Step 6: Final answer
    x = 2,974.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.