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Finding the Fourth Proportional to 8,872.80, 13,309.20 and 4,191.27

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Solution

The fourth proportional to 8,872.80, 13,309.20 and 4,191.27 is: 6,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.80 : 13,309.20 = 4,191.27 : x
  2. Step 2: Convert to fraction form
    8,872.80/13,309.20 = 4,191.27/x
  3. Step 3: Cross multiply
    8,872.80x = 13,309.20 × 4,191.27
  4. Step 4: Simplify right side
    8,872.80x = 55,782,450.68
  5. Step 5: Solve for x
    x = 55,782,450.68/8,872.80
  6. Step 6: Final answer
    x = 6,286.91

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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.