Home / 1,990.96-2,747.40-1,106.73

Finding the Fourth Proportional to 1,990.96, 2,747.40 and 1,106.73

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Solution

The fourth proportional to 1,990.96, 2,747.40 and 1,106.73 is: 1,527.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.96 : 2,747.40 = 1,106.73 : x
  2. Step 2: Convert to fraction form
    1,990.96/2,747.40 = 1,106.73/x
  3. Step 3: Cross multiply
    1,990.96x = 2,747.40 × 1,106.73
  4. Step 4: Simplify right side
    1,990.96x = 3,040,630.00
  5. Step 5: Solve for x
    x = 3,040,630.00/1,990.96
  6. Step 6: Final answer
    x = 1,527.22

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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.