Home / 2,067.68-3,102.80-1,855.20

Finding the Fourth Proportional to 2,067.68, 3,102.80 and 1,855.20

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Solution

The fourth proportional to 2,067.68, 3,102.80 and 1,855.20 is: 2,783.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,067.68 : 3,102.80 = 1,855.20 : x
  2. Step 2: Convert to fraction form
    2,067.68/3,102.80 = 1,855.20/x
  3. Step 3: Cross multiply
    2,067.68x = 3,102.80 × 1,855.20
  4. Step 4: Simplify right side
    2,067.68x = 5,756,314.56
  5. Step 5: Solve for x
    x = 5,756,314.56/2,067.68
  6. Step 6: Final answer
    x = 2,783.95

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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.