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Finding the Fourth Proportional to 1,911.11, 2,867.06 and 679.41

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Solution

The fourth proportional to 1,911.11, 2,867.06 and 679.41 is: 1,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.11 : 2,867.06 = 679.41 : x
  2. Step 2: Convert to fraction form
    1,911.11/2,867.06 = 679.41/x
  3. Step 3: Cross multiply
    1,911.11x = 2,867.06 × 679.41
  4. Step 4: Simplify right side
    1,911.11x = 1,947,910.93
  5. Step 5: Solve for x
    x = 1,947,910.93/1,911.11
  6. Step 6: Final answer
    x = 1,019.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.