Home / 3,958.38-5,462.34-2,189.88

Finding the Fourth Proportional to 3,958.38, 5,462.34 and 2,189.88

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Solution

The fourth proportional to 3,958.38, 5,462.34 and 2,189.88 is: 3,021.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.38 : 5,462.34 = 2,189.88 : x
  2. Step 2: Convert to fraction form
    3,958.38/5,462.34 = 2,189.88/x
  3. Step 3: Cross multiply
    3,958.38x = 5,462.34 × 2,189.88
  4. Step 4: Simplify right side
    3,958.38x = 11,961,869.12
  5. Step 5: Solve for x
    x = 11,961,869.12/3,958.38
  6. Step 6: Final answer
    x = 3,021.91

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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.