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Finding the Fourth Proportional to 8,216.44, 12,328.80 and 3,287.50

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Solution

The fourth proportional to 8,216.44, 12,328.80 and 3,287.50 is: 4,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,216.44 : 12,328.80 = 3,287.50 : x
  2. Step 2: Convert to fraction form
    8,216.44/12,328.80 = 3,287.50/x
  3. Step 3: Cross multiply
    8,216.44x = 12,328.80 × 3,287.50
  4. Step 4: Simplify right side
    8,216.44x = 40,530,930
  5. Step 5: Solve for x
    x = 40,530,930/8,216.44
  6. Step 6: Final answer
    x = 4,932.91

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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.