Home / 8,198.28-12,279.96-4,290.84

Finding the Fourth Proportional to 8,198.28, 12,279.96 and 4,290.84

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Solution

The fourth proportional to 8,198.28, 12,279.96 and 4,290.84 is: 6,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.28 : 12,279.96 = 4,290.84 : x
  2. Step 2: Convert to fraction form
    8,198.28/12,279.96 = 4,290.84/x
  3. Step 3: Cross multiply
    8,198.28x = 12,279.96 × 4,290.84
  4. Step 4: Simplify right side
    8,198.28x = 52,691,343.57
  5. Step 5: Solve for x
    x = 52,691,343.57/8,198.28
  6. Step 6: Final answer
    x = 6,427.12

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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.