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Finding the Fourth Proportional to 7,338.75, 11,009.75 and 2,721.75

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Solution

The fourth proportional to 7,338.75, 11,009.75 and 2,721.75 is: 4,083.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.75 : 11,009.75 = 2,721.75 : x
  2. Step 2: Convert to fraction form
    7,338.75/11,009.75 = 2,721.75/x
  3. Step 3: Cross multiply
    7,338.75x = 11,009.75 × 2,721.75
  4. Step 4: Simplify right side
    7,338.75x = 29,965,787.06
  5. Step 5: Solve for x
    x = 29,965,787.06/7,338.75
  6. Step 6: Final answer
    x = 4,083.23

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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.