Home / 1,481.12-2,221.80-441.14

Finding the Fourth Proportional to 1,481.12, 2,221.80 and 441.14

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Solution

The fourth proportional to 1,481.12, 2,221.80 and 441.14 is: 661.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.12 : 2,221.80 = 441.14 : x
  2. Step 2: Convert to fraction form
    1,481.12/2,221.80 = 441.14/x
  3. Step 3: Cross multiply
    1,481.12x = 2,221.80 × 441.14
  4. Step 4: Simplify right side
    1,481.12x = 980,124.85
  5. Step 5: Solve for x
    x = 980,124.85/1,481.12
  6. Step 6: Final answer
    x = 661.75

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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.