Home / 7,987.74-11,982.33-2,144.31

Finding the Fourth Proportional to 7,987.74, 11,982.33 and 2,144.31

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Solution

The fourth proportional to 7,987.74, 11,982.33 and 2,144.31 is: 3,216.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.74 : 11,982.33 = 2,144.31 : x
  2. Step 2: Convert to fraction form
    7,987.74/11,982.33 = 2,144.31/x
  3. Step 3: Cross multiply
    7,987.74x = 11,982.33 × 2,144.31
  4. Step 4: Simplify right side
    7,987.74x = 25,693,830.04
  5. Step 5: Solve for x
    x = 25,693,830.04/7,987.74
  6. Step 6: Final answer
    x = 3,216.66

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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.