Home / 2,727.20-4,091.45-779.36

Finding the Fourth Proportional to 2,727.20, 4,091.45 and 779.36

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Solution

The fourth proportional to 2,727.20, 4,091.45 and 779.36 is: 1,169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,727.20 : 4,091.45 = 779.36 : x
  2. Step 2: Convert to fraction form
    2,727.20/4,091.45 = 779.36/x
  3. Step 3: Cross multiply
    2,727.20x = 4,091.45 × 779.36
  4. Step 4: Simplify right side
    2,727.20x = 3,188,688.12
  5. Step 5: Solve for x
    x = 3,188,688.12/2,727.20
  6. Step 6: Final answer
    x = 1,169.22

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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.