Home / 8,120.82-12,183.72-3,960.24

Finding the Fourth Proportional to 8,120.82, 12,183.72 and 3,960.24

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Solution

The fourth proportional to 8,120.82, 12,183.72 and 3,960.24 is: 5,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.82 : 12,183.72 = 3,960.24 : x
  2. Step 2: Convert to fraction form
    8,120.82/12,183.72 = 3,960.24/x
  3. Step 3: Cross multiply
    8,120.82x = 12,183.72 × 3,960.24
  4. Step 4: Simplify right side
    8,120.82x = 48,250,455.29
  5. Step 5: Solve for x
    x = 48,250,455.29/8,120.82
  6. Step 6: Final answer
    x = 5,941.57

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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.