Home / 3,972-5,481.38-2,203.86

Finding the Fourth Proportional to 3,972, 5,481.38 and 2,203.86

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Solution

The fourth proportional to 3,972, 5,481.38 and 2,203.86 is: 3,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972 : 5,481.38 = 2,203.86 : x
  2. Step 2: Convert to fraction form
    3,972/5,481.38 = 2,203.86/x
  3. Step 3: Cross multiply
    3,972x = 5,481.38 × 2,203.86
  4. Step 4: Simplify right side
    3,972x = 12,080,183.11
  5. Step 5: Solve for x
    x = 12,080,183.11/3,972
  6. Step 6: Final answer
    x = 3,041.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.