Home / 3,923.50-5,414.30-2,154.99

Finding the Fourth Proportional to 3,923.50, 5,414.30 and 2,154.99

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Solution

The fourth proportional to 3,923.50, 5,414.30 and 2,154.99 is: 2,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.50 : 5,414.30 = 2,154.99 : x
  2. Step 2: Convert to fraction form
    3,923.50/5,414.30 = 2,154.99/x
  3. Step 3: Cross multiply
    3,923.50x = 5,414.30 × 2,154.99
  4. Step 4: Simplify right side
    3,923.50x = 11,667,767.74
  5. Step 5: Solve for x
    x = 11,667,767.74/3,923.50
  6. Step 6: Final answer
    x = 2,973.82

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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.