Home / 5,286.09-7,929.20-2,163.92

Finding the Fourth Proportional to 5,286.09, 7,929.20 and 2,163.92

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Solution

The fourth proportional to 5,286.09, 7,929.20 and 2,163.92 is: 3,245.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.09 : 7,929.20 = 2,163.92 : x
  2. Step 2: Convert to fraction form
    5,286.09/7,929.20 = 2,163.92/x
  3. Step 3: Cross multiply
    5,286.09x = 7,929.20 × 2,163.92
  4. Step 4: Simplify right side
    5,286.09x = 17,158,167.52
  5. Step 5: Solve for x
    x = 17,158,167.52/5,286.09
  6. Step 6: Final answer
    x = 3,245.91

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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.