Home / 3,972.15-5,481.61-2,203.79

Finding the Fourth Proportional to 3,972.15, 5,481.61 and 2,203.79

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Solution

The fourth proportional to 3,972.15, 5,481.61 and 2,203.79 is: 3,041.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.15 : 5,481.61 = 2,203.79 : x
  2. Step 2: Convert to fraction form
    3,972.15/5,481.61 = 2,203.79/x
  3. Step 3: Cross multiply
    3,972.15x = 5,481.61 × 2,203.79
  4. Step 4: Simplify right side
    3,972.15x = 12,080,284.38
  5. Step 5: Solve for x
    x = 12,080,284.38/3,972.15
  6. Step 6: Final answer
    x = 3,041.25

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1.5x scale

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.