Home / 2,742.28-4,113.45-2,191.87

Finding the Fourth Proportional to 2,742.28, 4,113.45 and 2,191.87

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Solution

The fourth proportional to 2,742.28, 4,113.45 and 2,191.87 is: 3,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.28 : 4,113.45 = 2,191.87 : x
  2. Step 2: Convert to fraction form
    2,742.28/4,113.45 = 2,191.87/x
  3. Step 3: Cross multiply
    2,742.28x = 4,113.45 × 2,191.87
  4. Step 4: Simplify right side
    2,742.28x = 9,016,147.65
  5. Step 5: Solve for x
    x = 9,016,147.65/2,742.28
  6. Step 6: Final answer
    x = 3,287.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.