Home / 8,380.96-12,571.85-5,613.19

Finding the Fourth Proportional to 8,380.96, 12,571.85 and 5,613.19

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Solution

The fourth proportional to 8,380.96, 12,571.85 and 5,613.19 is: 8,420.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.96 : 12,571.85 = 5,613.19 : x
  2. Step 2: Convert to fraction form
    8,380.96/12,571.85 = 5,613.19/x
  3. Step 3: Cross multiply
    8,380.96x = 12,571.85 × 5,613.19
  4. Step 4: Simplify right side
    8,380.96x = 70,568,182.70
  5. Step 5: Solve for x
    x = 70,568,182.70/8,380.96
  6. Step 6: Final answer
    x = 8,420.06

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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.