Home / 8,115.31-12,174.80-2,568.99

Finding the Fourth Proportional to 8,115.31, 12,174.80 and 2,568.99

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Solution

The fourth proportional to 8,115.31, 12,174.80 and 2,568.99 is: 3,854.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.31 : 12,174.80 = 2,568.99 : x
  2. Step 2: Convert to fraction form
    8,115.31/12,174.80 = 2,568.99/x
  3. Step 3: Cross multiply
    8,115.31x = 12,174.80 × 2,568.99
  4. Step 4: Simplify right side
    8,115.31x = 31,276,939.45
  5. Step 5: Solve for x
    x = 31,276,939.45/8,115.31
  6. Step 6: Final answer
    x = 3,854.07

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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.