Home / 8,178.52-12,249.33-3,786.75

Finding the Fourth Proportional to 8,178.52, 12,249.33 and 3,786.75

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Solution

The fourth proportional to 8,178.52, 12,249.33 and 3,786.75 is: 5,671.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.52 : 12,249.33 = 3,786.75 : x
  2. Step 2: Convert to fraction form
    8,178.52/12,249.33 = 3,786.75/x
  3. Step 3: Cross multiply
    8,178.52x = 12,249.33 × 3,786.75
  4. Step 4: Simplify right side
    8,178.52x = 46,385,136.18
  5. Step 5: Solve for x
    x = 46,385,136.18/8,178.52
  6. Step 6: Final answer
    x = 5,671.58

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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.