Home / 7,949.02-11,920.77-3,998.75

Finding the Fourth Proportional to 7,949.02, 11,920.77 and 3,998.75

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Solution

The fourth proportional to 7,949.02, 11,920.77 and 3,998.75 is: 5,996.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,949.02 : 11,920.77 = 3,998.75 : x
  2. Step 2: Convert to fraction form
    7,949.02/11,920.77 = 3,998.75/x
  3. Step 3: Cross multiply
    7,949.02x = 11,920.77 × 3,998.75
  4. Step 4: Simplify right side
    7,949.02x = 47,668,099.44
  5. Step 5: Solve for x
    x = 47,668,099.44/7,949.02
  6. Step 6: Final answer
    x = 5,996.73

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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.