Home / 8,519.72-12,771.29-4,134.78

Finding the Fourth Proportional to 8,519.72, 12,771.29 and 4,134.78

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Solution

The fourth proportional to 8,519.72, 12,771.29 and 4,134.78 is: 6,198.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.72 : 12,771.29 = 4,134.78 : x
  2. Step 2: Convert to fraction form
    8,519.72/12,771.29 = 4,134.78/x
  3. Step 3: Cross multiply
    8,519.72x = 12,771.29 × 4,134.78
  4. Step 4: Simplify right side
    8,519.72x = 52,806,453.79
  5. Step 5: Solve for x
    x = 52,806,453.79/8,519.72
  6. Step 6: Final answer
    x = 6,198.15

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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.