Home / 3,815.51-5,723.19-1,218.38

Finding the Fourth Proportional to 3,815.51, 5,723.19 and 1,218.38

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Solution

The fourth proportional to 3,815.51, 5,723.19 and 1,218.38 is: 1,827.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.51 : 5,723.19 = 1,218.38 : x
  2. Step 2: Convert to fraction form
    3,815.51/5,723.19 = 1,218.38/x
  3. Step 3: Cross multiply
    3,815.51x = 5,723.19 × 1,218.38
  4. Step 4: Simplify right side
    3,815.51x = 6,972,991.62
  5. Step 5: Solve for x
    x = 6,972,991.62/3,815.51
  6. Step 6: Final answer
    x = 1,827.54

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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.