Home / 8,005.38-12,008.13-2,811.25

Finding the Fourth Proportional to 8,005.38, 12,008.13 and 2,811.25

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Solution

The fourth proportional to 8,005.38, 12,008.13 and 2,811.25 is: 4,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.38 : 12,008.13 = 2,811.25 : x
  2. Step 2: Convert to fraction form
    8,005.38/12,008.13 = 2,811.25/x
  3. Step 3: Cross multiply
    8,005.38x = 12,008.13 × 2,811.25
  4. Step 4: Simplify right side
    8,005.38x = 33,757,855.46
  5. Step 5: Solve for x
    x = 33,757,855.46/8,005.38
  6. Step 6: Final answer
    x = 4,216.90

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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.