Home / 1,481.12-2,221.90-556.54

Finding the Fourth Proportional to 1,481.12, 2,221.90 and 556.54

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Solution

The fourth proportional to 1,481.12, 2,221.90 and 556.54 is: 834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.12 : 2,221.90 = 556.54 : x
  2. Step 2: Convert to fraction form
    1,481.12/2,221.90 = 556.54/x
  3. Step 3: Cross multiply
    1,481.12x = 2,221.90 × 556.54
  4. Step 4: Simplify right side
    1,481.12x = 1,236,576.23
  5. Step 5: Solve for x
    x = 1,236,576.23/1,481.12
  6. Step 6: Final answer
    x = 834.89

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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.