Home / 7,989.54-11,976.15-2,791.14

Finding the Fourth Proportional to 7,989.54, 11,976.15 and 2,791.14

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Solution

The fourth proportional to 7,989.54, 11,976.15 and 2,791.14 is: 4,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.54 : 11,976.15 = 2,791.14 : x
  2. Step 2: Convert to fraction form
    7,989.54/11,976.15 = 2,791.14/x
  3. Step 3: Cross multiply
    7,989.54x = 11,976.15 × 2,791.14
  4. Step 4: Simplify right side
    7,989.54x = 33,427,111.31
  5. Step 5: Solve for x
    x = 33,427,111.31/7,989.54
  6. Step 6: Final answer
    x = 4,183.86

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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.