Home / 3,923.55-5,414.49-2,155.14

Finding the Fourth Proportional to 3,923.55, 5,414.49 and 2,155.14

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Solution

The fourth proportional to 3,923.55, 5,414.49 and 2,155.14 is: 2,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.55 : 5,414.49 = 2,155.14 : x
  2. Step 2: Convert to fraction form
    3,923.55/5,414.49 = 2,155.14/x
  3. Step 3: Cross multiply
    3,923.55x = 5,414.49 × 2,155.14
  4. Step 4: Simplify right side
    3,923.55x = 11,668,983.98
  5. Step 5: Solve for x
    x = 11,668,983.98/3,923.55
  6. Step 6: Final answer
    x = 2,974.09

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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.