Home / 2,578.11-3,863.69-1,881.51

Finding the Fourth Proportional to 2,578.11, 3,863.69 and 1,881.51

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Solution

The fourth proportional to 2,578.11, 3,863.69 and 1,881.51 is: 2,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.11 : 3,863.69 = 1,881.51 : x
  2. Step 2: Convert to fraction form
    2,578.11/3,863.69 = 1,881.51/x
  3. Step 3: Cross multiply
    2,578.11x = 3,863.69 × 1,881.51
  4. Step 4: Simplify right side
    2,578.11x = 7,269,571.37
  5. Step 5: Solve for x
    x = 7,269,571.37/2,578.11
  6. Step 6: Final answer
    x = 2,819.73

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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.