Home / 3,923.44-5,414.24-2,155.04

Finding the Fourth Proportional to 3,923.44, 5,414.24 and 2,155.04

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Solution

The fourth proportional to 3,923.44, 5,414.24 and 2,155.04 is: 2,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.44 : 5,414.24 = 2,155.04 : x
  2. Step 2: Convert to fraction form
    3,923.44/5,414.24 = 2,155.04/x
  3. Step 3: Cross multiply
    3,923.44x = 5,414.24 × 2,155.04
  4. Step 4: Simplify right side
    3,923.44x = 11,667,903.77
  5. Step 5: Solve for x
    x = 11,667,903.77/3,923.44
  6. Step 6: Final answer
    x = 2,973.90

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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.