Home / 7,982.03-11,972.07-2,139.09

Finding the Fourth Proportional to 7,982.03, 11,972.07 and 2,139.09

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Solution

The fourth proportional to 7,982.03, 11,972.07 and 2,139.09 is: 3,208.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.03 : 11,972.07 = 2,139.09 : x
  2. Step 2: Convert to fraction form
    7,982.03/11,972.07 = 2,139.09/x
  3. Step 3: Cross multiply
    7,982.03x = 11,972.07 × 2,139.09
  4. Step 4: Simplify right side
    7,982.03x = 25,609,335.22
  5. Step 5: Solve for x
    x = 25,609,335.22/7,982.03
  6. Step 6: Final answer
    x = 3,208.38

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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.