Home / 2,721.85-4,078.25-2,619.39

Finding the Fourth Proportional to 2,721.85, 4,078.25 and 2,619.39

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Solution

The fourth proportional to 2,721.85, 4,078.25 and 2,619.39 is: 3,924.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.85 : 4,078.25 = 2,619.39 : x
  2. Step 2: Convert to fraction form
    2,721.85/4,078.25 = 2,619.39/x
  3. Step 3: Cross multiply
    2,721.85x = 4,078.25 × 2,619.39
  4. Step 4: Simplify right side
    2,721.85x = 10,682,516.35
  5. Step 5: Solve for x
    x = 10,682,516.35/2,721.85
  6. Step 6: Final answer
    x = 3,924.72

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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.