Home / 8,317.92-12,473.22-3,120.15

Finding the Fourth Proportional to 8,317.92, 12,473.22 and 3,120.15

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Solution

The fourth proportional to 8,317.92, 12,473.22 and 3,120.15 is: 4,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.92 : 12,473.22 = 3,120.15 : x
  2. Step 2: Convert to fraction form
    8,317.92/12,473.22 = 3,120.15/x
  3. Step 3: Cross multiply
    8,317.92x = 12,473.22 × 3,120.15
  4. Step 4: Simplify right side
    8,317.92x = 38,918,317.38
  5. Step 5: Solve for x
    x = 38,918,317.38/8,317.92
  6. Step 6: Final answer
    x = 4,678.85

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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.