Home / 2,727.24-4,091.12-779.72

Finding the Fourth Proportional to 2,727.24, 4,091.12 and 779.72

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Solution

The fourth proportional to 2,727.24, 4,091.12 and 779.72 is: 1,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,727.24 : 4,091.12 = 779.72 : x
  2. Step 2: Convert to fraction form
    2,727.24/4,091.12 = 779.72/x
  3. Step 3: Cross multiply
    2,727.24x = 4,091.12 × 779.72
  4. Step 4: Simplify right side
    2,727.24x = 3,189,928.09
  5. Step 5: Solve for x
    x = 3,189,928.09/2,727.24
  6. Step 6: Final answer
    x = 1,169.65

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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.