Home / 1,338.27-2,007.45-1,079.79

Finding the Fourth Proportional to 1,338.27, 2,007.45 and 1,079.79

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Solution

The fourth proportional to 1,338.27, 2,007.45 and 1,079.79 is: 1,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.27 : 2,007.45 = 1,079.79 : x
  2. Step 2: Convert to fraction form
    1,338.27/2,007.45 = 1,079.79/x
  3. Step 3: Cross multiply
    1,338.27x = 2,007.45 × 1,079.79
  4. Step 4: Simplify right side
    1,338.27x = 2,167,624.44
  5. Step 5: Solve for x
    x = 2,167,624.44/1,338.27
  6. Step 6: Final answer
    x = 1,619.72

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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.