Home / 2,721.62-4,081.47-1,181.78

Finding the Fourth Proportional to 2,721.62, 4,081.47 and 1,181.78

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Solution

The fourth proportional to 2,721.62, 4,081.47 and 1,181.78 is: 1,772.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.62 : 4,081.47 = 1,181.78 : x
  2. Step 2: Convert to fraction form
    2,721.62/4,081.47 = 1,181.78/x
  3. Step 3: Cross multiply
    2,721.62x = 4,081.47 × 1,181.78
  4. Step 4: Simplify right side
    2,721.62x = 4,823,399.62
  5. Step 5: Solve for x
    x = 4,823,399.62/2,721.62
  6. Step 6: Final answer
    x = 1,772.25

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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.