Home / 8,115.24-12,168.29-2,569.98

Finding the Fourth Proportional to 8,115.24, 12,168.29 and 2,569.98

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Solution

The fourth proportional to 8,115.24, 12,168.29 and 2,569.98 is: 3,853.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.24 : 12,168.29 = 2,569.98 : x
  2. Step 2: Convert to fraction form
    8,115.24/12,168.29 = 2,569.98/x
  3. Step 3: Cross multiply
    8,115.24x = 12,168.29 × 2,569.98
  4. Step 4: Simplify right side
    8,115.24x = 31,272,249.08
  5. Step 5: Solve for x
    x = 31,272,249.08/8,115.24
  6. Step 6: Final answer
    x = 3,853.52

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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.