Home / 8,209.21-12,314.25-2,661.82

Finding the Fourth Proportional to 8,209.21, 12,314.25 and 2,661.82

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Solution

The fourth proportional to 8,209.21, 12,314.25 and 2,661.82 is: 3,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.21 : 12,314.25 = 2,661.82 : x
  2. Step 2: Convert to fraction form
    8,209.21/12,314.25 = 2,661.82/x
  3. Step 3: Cross multiply
    8,209.21x = 12,314.25 × 2,661.82
  4. Step 4: Simplify right side
    8,209.21x = 32,778,316.94
  5. Step 5: Solve for x
    x = 32,778,316.94/8,209.21
  6. Step 6: Final answer
    x = 3,992.87

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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.