Home / 8,239.89-12,351.09-2,691.74

Finding the Fourth Proportional to 8,239.89, 12,351.09 and 2,691.74

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Solution

The fourth proportional to 8,239.89, 12,351.09 and 2,691.74 is: 4,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.89 : 12,351.09 = 2,691.74 : x
  2. Step 2: Convert to fraction form
    8,239.89/12,351.09 = 2,691.74/x
  3. Step 3: Cross multiply
    8,239.89x = 12,351.09 × 2,691.74
  4. Step 4: Simplify right side
    8,239.89x = 33,245,923.00
  5. Step 5: Solve for x
    x = 33,245,923.00/8,239.89
  6. Step 6: Final answer
    x = 4,034.75

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1.5x scale

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.