Home / 7,481.30-11,221.74-3,319.11

Finding the Fourth Proportional to 7,481.30, 11,221.74 and 3,319.11

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Solution

The fourth proportional to 7,481.30, 11,221.74 and 3,319.11 is: 4,978.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.30 : 11,221.74 = 3,319.11 : x
  2. Step 2: Convert to fraction form
    7,481.30/11,221.74 = 3,319.11/x
  3. Step 3: Cross multiply
    7,481.30x = 11,221.74 × 3,319.11
  4. Step 4: Simplify right side
    7,481.30x = 37,246,189.45
  5. Step 5: Solve for x
    x = 37,246,189.45/7,481.30
  6. Step 6: Final answer
    x = 4,978.58

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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.