Home / 3,481.08-5,221.62-1,287.24

Finding the Fourth Proportional to 3,481.08, 5,221.62 and 1,287.24

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Solution

The fourth proportional to 3,481.08, 5,221.62 and 1,287.24 is: 1,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.08 : 5,221.62 = 1,287.24 : x
  2. Step 2: Convert to fraction form
    3,481.08/5,221.62 = 1,287.24/x
  3. Step 3: Cross multiply
    3,481.08x = 5,221.62 × 1,287.24
  4. Step 4: Simplify right side
    3,481.08x = 6,721,478.13
  5. Step 5: Solve for x
    x = 6,721,478.13/3,481.08
  6. Step 6: Final answer
    x = 1,930.86

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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.