Home / 3,958.11-5,462.15-2,189.70

Finding the Fourth Proportional to 3,958.11, 5,462.15 and 2,189.70

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Solution

The fourth proportional to 3,958.11, 5,462.15 and 2,189.70 is: 3,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.11 : 5,462.15 = 2,189.70 : x
  2. Step 2: Convert to fraction form
    3,958.11/5,462.15 = 2,189.70/x
  3. Step 3: Cross multiply
    3,958.11x = 5,462.15 × 2,189.70
  4. Step 4: Simplify right side
    3,958.11x = 11,960,458.91
  5. Step 5: Solve for x
    x = 11,960,458.91/3,958.11
  6. Step 6: Final answer
    x = 3,021.76

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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.