Home / 1,991.04-2,747.43-1,106.75

Finding the Fourth Proportional to 1,991.04, 2,747.43 and 1,106.75

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Solution

The fourth proportional to 1,991.04, 2,747.43 and 1,106.75 is: 1,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.04 : 2,747.43 = 1,106.75 : x
  2. Step 2: Convert to fraction form
    1,991.04/2,747.43 = 1,106.75/x
  3. Step 3: Cross multiply
    1,991.04x = 2,747.43 × 1,106.75
  4. Step 4: Simplify right side
    1,991.04x = 3,040,704.42
  5. Step 5: Solve for x
    x = 3,040,704.42/1,991.04
  6. Step 6: Final answer
    x = 1,527.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.