Home / 1,815.11-2,722.37-516.27

Finding the Fourth Proportional to 1,815.11, 2,722.37 and 516.27

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Solution

The fourth proportional to 1,815.11, 2,722.37 and 516.27 is: 774.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.11 : 2,722.37 = 516.27 : x
  2. Step 2: Convert to fraction form
    1,815.11/2,722.37 = 516.27/x
  3. Step 3: Cross multiply
    1,815.11x = 2,722.37 × 516.27
  4. Step 4: Simplify right side
    1,815.11x = 1,405,475.38
  5. Step 5: Solve for x
    x = 1,405,475.38/1,815.11
  6. Step 6: Final answer
    x = 774.32

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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.