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Finding the Fourth Proportional to 8,331.75, 12,491.09 and 4,169.67

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Solution

The fourth proportional to 8,331.75, 12,491.09 and 4,169.67 is: 6,251.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.75 : 12,491.09 = 4,169.67 : x
  2. Step 2: Convert to fraction form
    8,331.75/12,491.09 = 4,169.67/x
  3. Step 3: Cross multiply
    8,331.75x = 12,491.09 × 4,169.67
  4. Step 4: Simplify right side
    8,331.75x = 52,083,723.24
  5. Step 5: Solve for x
    x = 52,083,723.24/8,331.75
  6. Step 6: Final answer
    x = 6,251.23

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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.