Home / 2,725.11-4,086.42-776.85

Finding the Fourth Proportional to 2,725.11, 4,086.42 and 776.85

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Solution

The fourth proportional to 2,725.11, 4,086.42 and 776.85 is: 1,164.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.11 : 4,086.42 = 776.85 : x
  2. Step 2: Convert to fraction form
    2,725.11/4,086.42 = 776.85/x
  3. Step 3: Cross multiply
    2,725.11x = 4,086.42 × 776.85
  4. Step 4: Simplify right side
    2,725.11x = 3,174,535.38
  5. Step 5: Solve for x
    x = 3,174,535.38/2,725.11
  6. Step 6: Final answer
    x = 1,164.92

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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.