Home / 1,815.40-2,723.22-516.82

Finding the Fourth Proportional to 1,815.40, 2,723.22 and 516.82

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Solution

The fourth proportional to 1,815.40, 2,723.22 and 516.82 is: 775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.40 : 2,723.22 = 516.82 : x
  2. Step 2: Convert to fraction form
    1,815.40/2,723.22 = 516.82/x
  3. Step 3: Cross multiply
    1,815.40x = 2,723.22 × 516.82
  4. Step 4: Simplify right side
    1,815.40x = 1,407,414.56
  5. Step 5: Solve for x
    x = 1,407,414.56/1,815.40
  6. Step 6: Final answer
    x = 775.26

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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.