Home / 8,571.29-12,861.79-3,380.81

Finding the Fourth Proportional to 8,571.29, 12,861.79 and 3,380.81

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Solution

The fourth proportional to 8,571.29, 12,861.79 and 3,380.81 is: 5,073.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.29 : 12,861.79 = 3,380.81 : x
  2. Step 2: Convert to fraction form
    8,571.29/12,861.79 = 3,380.81/x
  3. Step 3: Cross multiply
    8,571.29x = 12,861.79 × 3,380.81
  4. Step 4: Simplify right side
    8,571.29x = 43,483,195.49
  5. Step 5: Solve for x
    x = 43,483,195.49/8,571.29
  6. Step 6: Final answer
    x = 5,073.12

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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.