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Finding the Fourth Proportional to 8,499.43, 12,745.87 and 3,231.68

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Solution

The fourth proportional to 8,499.43, 12,745.87 and 3,231.68 is: 4,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,499.43 : 12,745.87 = 3,231.68 : x
  2. Step 2: Convert to fraction form
    8,499.43/12,745.87 = 3,231.68/x
  3. Step 3: Cross multiply
    8,499.43x = 12,745.87 × 3,231.68
  4. Step 4: Simplify right side
    8,499.43x = 41,190,501.35
  5. Step 5: Solve for x
    x = 41,190,501.35/8,499.43
  6. Step 6: Final answer
    x = 4,846.27

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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.