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Finding the Fourth Proportional to 8,323.45, 12,481.53 and 2,478.90

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Solution

The fourth proportional to 8,323.45, 12,481.53 and 2,478.90 is: 3,717.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.45 : 12,481.53 = 2,478.90 : x
  2. Step 2: Convert to fraction form
    8,323.45/12,481.53 = 2,478.90/x
  3. Step 3: Cross multiply
    8,323.45x = 12,481.53 × 2,478.90
  4. Step 4: Simplify right side
    8,323.45x = 30,940,464.72
  5. Step 5: Solve for x
    x = 30,940,464.72/8,323.45
  6. Step 6: Final answer
    x = 3,717.26

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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.