Home / 7,987.41-11,981.93-2,144.48

Finding the Fourth Proportional to 7,987.41, 11,981.93 and 2,144.48

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Solution

The fourth proportional to 7,987.41, 11,981.93 and 2,144.48 is: 3,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.41 : 11,981.93 = 2,144.48 : x
  2. Step 2: Convert to fraction form
    7,987.41/11,981.93 = 2,144.48/x
  3. Step 3: Cross multiply
    7,987.41x = 11,981.93 × 2,144.48
  4. Step 4: Simplify right side
    7,987.41x = 25,694,938.61
  5. Step 5: Solve for x
    x = 25,694,938.61/7,987.41
  6. Step 6: Final answer
    x = 3,216.93

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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.