Home / 1,815.41-2,722.31-516.58

Finding the Fourth Proportional to 1,815.41, 2,722.31 and 516.58

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Solution

The fourth proportional to 1,815.41, 2,722.31 and 516.58 is: 774.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.41 : 2,722.31 = 516.58 : x
  2. Step 2: Convert to fraction form
    1,815.41/2,722.31 = 516.58/x
  3. Step 3: Cross multiply
    1,815.41x = 2,722.31 × 516.58
  4. Step 4: Simplify right side
    1,815.41x = 1,406,283.45
  5. Step 5: Solve for x
    x = 1,406,283.45/1,815.41
  6. Step 6: Final answer
    x = 774.64

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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.