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Finding the Fourth Proportional to 8,001.20, 11,992.20 and 4,103.60

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Solution

The fourth proportional to 8,001.20, 11,992.20 and 4,103.60 is: 6,150.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.20 : 11,992.20 = 4,103.60 : x
  2. Step 2: Convert to fraction form
    8,001.20/11,992.20 = 4,103.60/x
  3. Step 3: Cross multiply
    8,001.20x = 11,992.20 × 4,103.60
  4. Step 4: Simplify right side
    8,001.20x = 49,211,191.92
  5. Step 5: Solve for x
    x = 49,211,191.92/8,001.20
  6. Step 6: Final answer
    x = 6,150.48

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Half scale
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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.