Home / 8,217.28-12,320.13-2,879.15

Finding the Fourth Proportional to 8,217.28, 12,320.13 and 2,879.15

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Solution

The fourth proportional to 8,217.28, 12,320.13 and 2,879.15 is: 4,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,217.28 : 12,320.13 = 2,879.15 : x
  2. Step 2: Convert to fraction form
    8,217.28/12,320.13 = 2,879.15/x
  3. Step 3: Cross multiply
    8,217.28x = 12,320.13 × 2,879.15
  4. Step 4: Simplify right side
    8,217.28x = 35,471,451.49
  5. Step 5: Solve for x
    x = 35,471,451.49/8,217.28
  6. Step 6: Final answer
    x = 4,316.69

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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.