Home / 8,125.28-12,189.97-3,745.81

Finding the Fourth Proportional to 8,125.28, 12,189.97 and 3,745.81

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Solution

The fourth proportional to 8,125.28, 12,189.97 and 3,745.81 is: 5,619.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.28 : 12,189.97 = 3,745.81 : x
  2. Step 2: Convert to fraction form
    8,125.28/12,189.97 = 3,745.81/x
  3. Step 3: Cross multiply
    8,125.28x = 12,189.97 × 3,745.81
  4. Step 4: Simplify right side
    8,125.28x = 45,661,262.32
  5. Step 5: Solve for x
    x = 45,661,262.32/8,125.28
  6. Step 6: Final answer
    x = 5,619.66

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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.