Home / 1,991.08-2,747.70-1,106.97

Finding the Fourth Proportional to 1,991.08, 2,747.70 and 1,106.97

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Solution

The fourth proportional to 1,991.08, 2,747.70 and 1,106.97 is: 1,527.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.08 : 2,747.70 = 1,106.97 : x
  2. Step 2: Convert to fraction form
    1,991.08/2,747.70 = 1,106.97/x
  3. Step 3: Cross multiply
    1,991.08x = 2,747.70 × 1,106.97
  4. Step 4: Simplify right side
    1,991.08x = 3,041,621.47
  5. Step 5: Solve for x
    x = 3,041,621.47/1,991.08
  6. Step 6: Final answer
    x = 1,527.62

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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.