Home / 5,247.12-7,867.80-2,081.35

Finding the Fourth Proportional to 5,247.12, 7,867.80 and 2,081.35

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Solution

The fourth proportional to 5,247.12, 7,867.80 and 2,081.35 is: 3,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.12 : 7,867.80 = 2,081.35 : x
  2. Step 2: Convert to fraction form
    5,247.12/7,867.80 = 2,081.35/x
  3. Step 3: Cross multiply
    5,247.12x = 7,867.80 × 2,081.35
  4. Step 4: Simplify right side
    5,247.12x = 16,375,645.53
  5. Step 5: Solve for x
    x = 16,375,645.53/5,247.12
  6. Step 6: Final answer
    x = 3,120.88

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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.