Home / 3,201.75-4,419.23-1,805.31

Finding the Fourth Proportional to 3,201.75, 4,419.23 and 1,805.31

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Solution

The fourth proportional to 3,201.75, 4,419.23 and 1,805.31 is: 2,491.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,201.75 : 4,419.23 = 1,805.31 : x
  2. Step 2: Convert to fraction form
    3,201.75/4,419.23 = 1,805.31/x
  3. Step 3: Cross multiply
    3,201.75x = 4,419.23 × 1,805.31
  4. Step 4: Simplify right side
    3,201.75x = 7,978,071.08
  5. Step 5: Solve for x
    x = 7,978,071.08/3,201.75
  6. Step 6: Final answer
    x = 2,491.78

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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.