Home / 7,986.71-11,982.38-3,305.86

Finding the Fourth Proportional to 7,986.71, 11,982.38 and 3,305.86

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Solution

The fourth proportional to 7,986.71, 11,982.38 and 3,305.86 is: 4,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.71 : 11,982.38 = 3,305.86 : x
  2. Step 2: Convert to fraction form
    7,986.71/11,982.38 = 3,305.86/x
  3. Step 3: Cross multiply
    7,986.71x = 11,982.38 × 3,305.86
  4. Step 4: Simplify right side
    7,986.71x = 39,612,070.75
  5. Step 5: Solve for x
    x = 39,612,070.75/7,986.71
  6. Step 6: Final answer
    x = 4,959.75

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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.