Home / 3,969.66-5,478.30-2,201.25

Finding the Fourth Proportional to 3,969.66, 5,478.30 and 2,201.25

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Solution

The fourth proportional to 3,969.66, 5,478.30 and 2,201.25 is: 3,037.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.66 : 5,478.30 = 2,201.25 : x
  2. Step 2: Convert to fraction form
    3,969.66/5,478.30 = 2,201.25/x
  3. Step 3: Cross multiply
    3,969.66x = 5,478.30 × 2,201.25
  4. Step 4: Simplify right side
    3,969.66x = 12,059,107.88
  5. Step 5: Solve for x
    x = 12,059,107.88/3,969.66
  6. Step 6: Final answer
    x = 3,037.82

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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.