Home / 2,721.14-4,081.62-872.36

Finding the Fourth Proportional to 2,721.14, 4,081.62 and 872.36

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Solution

The fourth proportional to 2,721.14, 4,081.62 and 872.36 is: 1,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.14 : 4,081.62 = 872.36 : x
  2. Step 2: Convert to fraction form
    2,721.14/4,081.62 = 872.36/x
  3. Step 3: Cross multiply
    2,721.14x = 4,081.62 × 872.36
  4. Step 4: Simplify right side
    2,721.14x = 3,560,642.02
  5. Step 5: Solve for x
    x = 3,560,642.02/2,721.14
  6. Step 6: Final answer
    x = 1,308.51

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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.