Home / 1,815.73-2,722.78-516.89

Finding the Fourth Proportional to 1,815.73, 2,722.78 and 516.89

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Solution

The fourth proportional to 1,815.73, 2,722.78 and 516.89 is: 775.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.73 : 2,722.78 = 516.89 : x
  2. Step 2: Convert to fraction form
    1,815.73/2,722.78 = 516.89/x
  3. Step 3: Cross multiply
    1,815.73x = 2,722.78 × 516.89
  4. Step 4: Simplify right side
    1,815.73x = 1,407,377.75
  5. Step 5: Solve for x
    x = 1,407,377.75/1,815.73
  6. Step 6: Final answer
    x = 775.10

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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.