Home / 8,255.20-12,382.80-3,322.30

Finding the Fourth Proportional to 8,255.20, 12,382.80 and 3,322.30

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Solution

The fourth proportional to 8,255.20, 12,382.80 and 3,322.30 is: 4,983.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.20 : 12,382.80 = 3,322.30 : x
  2. Step 2: Convert to fraction form
    8,255.20/12,382.80 = 3,322.30/x
  3. Step 3: Cross multiply
    8,255.20x = 12,382.80 × 3,322.30
  4. Step 4: Simplify right side
    8,255.20x = 41,139,376.44
  5. Step 5: Solve for x
    x = 41,139,376.44/8,255.20
  6. Step 6: Final answer
    x = 4,983.45

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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.