Home / 8,091.28-12,141.72-3,161.44

Finding the Fourth Proportional to 8,091.28, 12,141.72 and 3,161.44

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Solution

The fourth proportional to 8,091.28, 12,141.72 and 3,161.44 is: 4,744.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.28 : 12,141.72 = 3,161.44 : x
  2. Step 2: Convert to fraction form
    8,091.28/12,141.72 = 3,161.44/x
  3. Step 3: Cross multiply
    8,091.28x = 12,141.72 × 3,161.44
  4. Step 4: Simplify right side
    8,091.28x = 38,385,319.28
  5. Step 5: Solve for x
    x = 38,385,319.28/8,091.28
  6. Step 6: Final answer
    x = 4,744.04

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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.