Home / 3,821.72-5,727.78-2,066.65

Finding the Fourth Proportional to 3,821.72, 5,727.78 and 2,066.65

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Solution

The fourth proportional to 3,821.72, 5,727.78 and 2,066.65 is: 3,097.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.72 : 5,727.78 = 2,066.65 : x
  2. Step 2: Convert to fraction form
    3,821.72/5,727.78 = 2,066.65/x
  3. Step 3: Cross multiply
    3,821.72x = 5,727.78 × 2,066.65
  4. Step 4: Simplify right side
    3,821.72x = 11,837,316.54
  5. Step 5: Solve for x
    x = 11,837,316.54/3,821.72
  6. Step 6: Final answer
    x = 3,097.38

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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.