Home / 1,815.32-2,722.84-516.62

Finding the Fourth Proportional to 1,815.32, 2,722.84 and 516.62

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Solution

The fourth proportional to 1,815.32, 2,722.84 and 516.62 is: 774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.32 : 2,722.84 = 516.62 : x
  2. Step 2: Convert to fraction form
    1,815.32/2,722.84 = 516.62/x
  3. Step 3: Cross multiply
    1,815.32x = 2,722.84 × 516.62
  4. Step 4: Simplify right side
    1,815.32x = 1,406,673.60
  5. Step 5: Solve for x
    x = 1,406,673.60/1,815.32
  6. Step 6: Final answer
    x = 774.89

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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.