Home / 2,574.27-3,861.07-725.20

Finding the Fourth Proportional to 2,574.27, 3,861.07 and 725.20

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Solution

The fourth proportional to 2,574.27, 3,861.07 and 725.20 is: 1,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,574.27 : 3,861.07 = 725.20 : x
  2. Step 2: Convert to fraction form
    2,574.27/3,861.07 = 725.20/x
  3. Step 3: Cross multiply
    2,574.27x = 3,861.07 × 725.20
  4. Step 4: Simplify right side
    2,574.27x = 2,800,047.96
  5. Step 5: Solve for x
    x = 2,800,047.96/2,574.27
  6. Step 6: Final answer
    x = 1,087.71

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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.