Home / 8,251.29-12,379.68-3,319.65

Finding the Fourth Proportional to 8,251.29, 12,379.68 and 3,319.65

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Solution

The fourth proportional to 8,251.29, 12,379.68 and 3,319.65 is: 4,980.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.29 : 12,379.68 = 3,319.65 : x
  2. Step 2: Convert to fraction form
    8,251.29/12,379.68 = 3,319.65/x
  3. Step 3: Cross multiply
    8,251.29x = 12,379.68 × 3,319.65
  4. Step 4: Simplify right side
    8,251.29x = 41,096,204.71
  5. Step 5: Solve for x
    x = 41,096,204.71/8,251.29
  6. Step 6: Final answer
    x = 4,980.58

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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.