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Finding the Fourth Proportional to 8,481.87, 12,720.52 and 3,550.50

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Solution

The fourth proportional to 8,481.87, 12,720.52 and 3,550.50 is: 5,324.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.87 : 12,720.52 = 3,550.50 : x
  2. Step 2: Convert to fraction form
    8,481.87/12,720.52 = 3,550.50/x
  3. Step 3: Cross multiply
    8,481.87x = 12,720.52 × 3,550.50
  4. Step 4: Simplify right side
    8,481.87x = 45,164,206.26
  5. Step 5: Solve for x
    x = 45,164,206.26/8,481.87
  6. Step 6: Final answer
    x = 5,324.79

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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.