Home / 3,873-5,811.81-2,687.97

Finding the Fourth Proportional to 3,873, 5,811.81 and 2,687.97

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Solution

The fourth proportional to 3,873, 5,811.81 and 2,687.97 is: 4,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873 : 5,811.81 = 2,687.97 : x
  2. Step 2: Convert to fraction form
    3,873/5,811.81 = 2,687.97/x
  3. Step 3: Cross multiply
    3,873x = 5,811.81 × 2,687.97
  4. Step 4: Simplify right side
    3,873x = 15,621,970.93
  5. Step 5: Solve for x
    x = 15,621,970.93/3,873
  6. Step 6: Final answer
    x = 4,033.56

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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.