Home / 3,923.28-5,414.22-2,154.87

Finding the Fourth Proportional to 3,923.28, 5,414.22 and 2,154.87

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Solution

The fourth proportional to 3,923.28, 5,414.22 and 2,154.87 is: 2,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.28 : 5,414.22 = 2,154.87 : x
  2. Step 2: Convert to fraction form
    3,923.28/5,414.22 = 2,154.87/x
  3. Step 3: Cross multiply
    3,923.28x = 5,414.22 × 2,154.87
  4. Step 4: Simplify right side
    3,923.28x = 11,666,940.25
  5. Step 5: Solve for x
    x = 11,666,940.25/3,923.28
  6. Step 6: Final answer
    x = 2,973.77

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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.