Home / 1,991.10-2,747.62-1,151.84

Finding the Fourth Proportional to 1,991.10, 2,747.62 and 1,151.84

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Solution

The fourth proportional to 1,991.10, 2,747.62 and 1,151.84 is: 1,589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.10 : 2,747.62 = 1,151.84 : x
  2. Step 2: Convert to fraction form
    1,991.10/2,747.62 = 1,151.84/x
  3. Step 3: Cross multiply
    1,991.10x = 2,747.62 × 1,151.84
  4. Step 4: Simplify right side
    1,991.10x = 3,164,818.62
  5. Step 5: Solve for x
    x = 3,164,818.62/1,991.10
  6. Step 6: Final answer
    x = 1,589.48

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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.