Home / 7,481.21-11,221.81-2,287.09

Finding the Fourth Proportional to 7,481.21, 11,221.81 and 2,287.09

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Solution

The fourth proportional to 7,481.21, 11,221.81 and 2,287.09 is: 3,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.21 : 11,221.81 = 2,287.09 : x
  2. Step 2: Convert to fraction form
    7,481.21/11,221.81 = 2,287.09/x
  3. Step 3: Cross multiply
    7,481.21x = 11,221.81 × 2,287.09
  4. Step 4: Simplify right side
    7,481.21x = 25,665,255.66
  5. Step 5: Solve for x
    x = 25,665,255.66/7,481.21
  6. Step 6: Final answer
    x = 3,430.63

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Double scale
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Similar ratio
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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.