Home / 1,391.81-2,089.67-1,367.19

Finding the Fourth Proportional to 1,391.81, 2,089.67 and 1,367.19

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Solution

The fourth proportional to 1,391.81, 2,089.67 and 1,367.19 is: 2,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.81 : 2,089.67 = 1,367.19 : x
  2. Step 2: Convert to fraction form
    1,391.81/2,089.67 = 1,367.19/x
  3. Step 3: Cross multiply
    1,391.81x = 2,089.67 × 1,367.19
  4. Step 4: Simplify right side
    1,391.81x = 2,856,969.09
  5. Step 5: Solve for x
    x = 2,856,969.09/1,391.81
  6. Step 6: Final answer
    x = 2,052.71

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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.