Home / 3,923.42-5,414.36-2,154.98

Finding the Fourth Proportional to 3,923.42, 5,414.36 and 2,154.98

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Solution

The fourth proportional to 3,923.42, 5,414.36 and 2,154.98 is: 2,973.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.42 : 5,414.36 = 2,154.98 : x
  2. Step 2: Convert to fraction form
    3,923.42/5,414.36 = 2,154.98/x
  3. Step 3: Cross multiply
    3,923.42x = 5,414.36 × 2,154.98
  4. Step 4: Simplify right side
    3,923.42x = 11,667,799.67
  5. Step 5: Solve for x
    x = 11,667,799.67/3,923.42
  6. Step 6: Final answer
    x = 2,973.89

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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.