Home / 8,198.15-12,299.45-3,271.28

Finding the Fourth Proportional to 8,198.15, 12,299.45 and 3,271.28

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Solution

The fourth proportional to 8,198.15, 12,299.45 and 3,271.28 is: 4,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.15 : 12,299.45 = 3,271.28 : x
  2. Step 2: Convert to fraction form
    8,198.15/12,299.45 = 3,271.28/x
  3. Step 3: Cross multiply
    8,198.15x = 12,299.45 × 3,271.28
  4. Step 4: Simplify right side
    8,198.15x = 40,234,866.94
  5. Step 5: Solve for x
    x = 40,234,866.94/8,198.15
  6. Step 6: Final answer
    x = 4,907.80

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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.