Home / 8,279.38-12,422.58-3,896.74

Finding the Fourth Proportional to 8,279.38, 12,422.58 and 3,896.74

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Solution

The fourth proportional to 8,279.38, 12,422.58 and 3,896.74 is: 5,846.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.38 : 12,422.58 = 3,896.74 : x
  2. Step 2: Convert to fraction form
    8,279.38/12,422.58 = 3,896.74/x
  3. Step 3: Cross multiply
    8,279.38x = 12,422.58 × 3,896.74
  4. Step 4: Simplify right side
    8,279.38x = 48,407,564.39
  5. Step 5: Solve for x
    x = 48,407,564.39/8,279.38
  6. Step 6: Final answer
    x = 5,846.76

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1.5x scale

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.