Home / 8,205.09-12,311.28-3,009.75

Finding the Fourth Proportional to 8,205.09, 12,311.28 and 3,009.75

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Solution

The fourth proportional to 8,205.09, 12,311.28 and 3,009.75 is: 4,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.09 : 12,311.28 = 3,009.75 : x
  2. Step 2: Convert to fraction form
    8,205.09/12,311.28 = 3,009.75/x
  3. Step 3: Cross multiply
    8,205.09x = 12,311.28 × 3,009.75
  4. Step 4: Simplify right side
    8,205.09x = 37,053,874.98
  5. Step 5: Solve for x
    x = 37,053,874.98/8,205.09
  6. Step 6: Final answer
    x = 4,515.96

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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.