Home / 8,987.31-13,481.78-3,440.43

Finding the Fourth Proportional to 8,987.31, 13,481.78 and 3,440.43

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Solution

The fourth proportional to 8,987.31, 13,481.78 and 3,440.43 is: 5,160.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.31 : 13,481.78 = 3,440.43 : x
  2. Step 2: Convert to fraction form
    8,987.31/13,481.78 = 3,440.43/x
  3. Step 3: Cross multiply
    8,987.31x = 13,481.78 × 3,440.43
  4. Step 4: Simplify right side
    8,987.31x = 46,383,103.16
  5. Step 5: Solve for x
    x = 46,383,103.16/8,987.31
  6. Step 6: Final answer
    x = 5,160.96

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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.