Home / 5,105.13-7,045.05-2,867.20

Finding the Fourth Proportional to 5,105.13, 7,045.05 and 2,867.20

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Solution

The fourth proportional to 5,105.13, 7,045.05 and 2,867.20 is: 3,956.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.13 : 7,045.05 = 2,867.20 : x
  2. Step 2: Convert to fraction form
    5,105.13/7,045.05 = 2,867.20/x
  3. Step 3: Cross multiply
    5,105.13x = 7,045.05 × 2,867.20
  4. Step 4: Simplify right side
    5,105.13x = 20,199,517.80
  5. Step 5: Solve for x
    x = 20,199,517.80/5,105.13
  6. Step 6: Final answer
    x = 3,956.71

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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.