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Finding the Fourth Proportional to 3,201.65, 4,799.63 and 1,721.66

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Solution

The fourth proportional to 3,201.65, 4,799.63 and 1,721.66 is: 2,580.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,201.65 : 4,799.63 = 1,721.66 : x
  2. Step 2: Convert to fraction form
    3,201.65/4,799.63 = 1,721.66/x
  3. Step 3: Cross multiply
    3,201.65x = 4,799.63 × 1,721.66
  4. Step 4: Simplify right side
    3,201.65x = 8,263,334.38
  5. Step 5: Solve for x
    x = 8,263,334.38/3,201.65
  6. Step 6: Final answer
    x = 2,580.97

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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.