Home / 8,081.28-12,121.92-2,535.48

Finding the Fourth Proportional to 8,081.28, 12,121.92 and 2,535.48

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Solution

The fourth proportional to 8,081.28, 12,121.92 and 2,535.48 is: 3,803.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.28 : 12,121.92 = 2,535.48 : x
  2. Step 2: Convert to fraction form
    8,081.28/12,121.92 = 2,535.48/x
  3. Step 3: Cross multiply
    8,081.28x = 12,121.92 × 2,535.48
  4. Step 4: Simplify right side
    8,081.28x = 30,734,885.72
  5. Step 5: Solve for x
    x = 30,734,885.72/8,081.28
  6. Step 6: Final answer
    x = 3,803.22

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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.