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Finding the Fourth Proportional to 8,495.92, 12,739.92 and 3,231.91

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Solution

The fourth proportional to 8,495.92, 12,739.92 and 3,231.91 is: 4,846.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.92 : 12,739.92 = 3,231.91 : x
  2. Step 2: Convert to fraction form
    8,495.92/12,739.92 = 3,231.91/x
  3. Step 3: Cross multiply
    8,495.92x = 12,739.92 × 3,231.91
  4. Step 4: Simplify right side
    8,495.92x = 41,174,274.85
  5. Step 5: Solve for x
    x = 41,174,274.85/8,495.92
  6. Step 6: Final answer
    x = 4,846.36

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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.