Home / 7,983.14-11,974.37-2,139.75

Finding the Fourth Proportional to 7,983.14, 11,974.37 and 2,139.75

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Solution

The fourth proportional to 7,983.14, 11,974.37 and 2,139.75 is: 3,209.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.14 : 11,974.37 = 2,139.75 : x
  2. Step 2: Convert to fraction form
    7,983.14/11,974.37 = 2,139.75/x
  3. Step 3: Cross multiply
    7,983.14x = 11,974.37 × 2,139.75
  4. Step 4: Simplify right side
    7,983.14x = 25,622,147.51
  5. Step 5: Solve for x
    x = 25,622,147.51/7,983.14
  6. Step 6: Final answer
    x = 3,209.53

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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.