Home / 9,147.82-13,721.40-3,879.44

Finding the Fourth Proportional to 9,147.82, 13,721.40 and 3,879.44

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Solution

The fourth proportional to 9,147.82, 13,721.40 and 3,879.44 is: 5,819.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.82 : 13,721.40 = 3,879.44 : x
  2. Step 2: Convert to fraction form
    9,147.82/13,721.40 = 3,879.44/x
  3. Step 3: Cross multiply
    9,147.82x = 13,721.40 × 3,879.44
  4. Step 4: Simplify right side
    9,147.82x = 53,231,279.41
  5. Step 5: Solve for x
    x = 53,231,279.41/9,147.82
  6. Step 6: Final answer
    x = 5,819.01

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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.