Home / 1,990.83-2,747.33-1,106.68

Finding the Fourth Proportional to 1,990.83, 2,747.33 and 1,106.68

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Solution

The fourth proportional to 1,990.83, 2,747.33 and 1,106.68 is: 1,527.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.83 : 2,747.33 = 1,106.68 : x
  2. Step 2: Convert to fraction form
    1,990.83/2,747.33 = 1,106.68/x
  3. Step 3: Cross multiply
    1,990.83x = 2,747.33 × 1,106.68
  4. Step 4: Simplify right side
    1,990.83x = 3,040,409.63
  5. Step 5: Solve for x
    x = 3,040,409.63/1,990.83
  6. Step 6: Final answer
    x = 1,527.21

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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.