Home / 2,727.11-4,089.42-778.85

Finding the Fourth Proportional to 2,727.11, 4,089.42 and 778.85

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Solution

The fourth proportional to 2,727.11, 4,089.42 and 778.85 is: 1,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,727.11 : 4,089.42 = 778.85 : x
  2. Step 2: Convert to fraction form
    2,727.11/4,089.42 = 778.85/x
  3. Step 3: Cross multiply
    2,727.11x = 4,089.42 × 778.85
  4. Step 4: Simplify right side
    2,727.11x = 3,185,044.77
  5. Step 5: Solve for x
    x = 3,185,044.77/2,727.11
  6. Step 6: Final answer
    x = 1,167.92

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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.