Home / 1,338.67-2,007.73-1,121.59

Finding the Fourth Proportional to 1,338.67, 2,007.73 and 1,121.59

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Solution

The fourth proportional to 1,338.67, 2,007.73 and 1,121.59 is: 1,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.67 : 2,007.73 = 1,121.59 : x
  2. Step 2: Convert to fraction form
    1,338.67/2,007.73 = 1,121.59/x
  3. Step 3: Cross multiply
    1,338.67x = 2,007.73 × 1,121.59
  4. Step 4: Simplify right side
    1,338.67x = 2,251,849.89
  5. Step 5: Solve for x
    x = 2,251,849.89/1,338.67
  6. Step 6: Final answer
    x = 1,682.15

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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.