Home / 3,511.20-5,255.79-1,862.75

Finding the Fourth Proportional to 3,511.20, 5,255.79 and 1,862.75

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Solution

The fourth proportional to 3,511.20, 5,255.79 and 1,862.75 is: 2,788.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.20 : 5,255.79 = 1,862.75 : x
  2. Step 2: Convert to fraction form
    3,511.20/5,255.79 = 1,862.75/x
  3. Step 3: Cross multiply
    3,511.20x = 5,255.79 × 1,862.75
  4. Step 4: Simplify right side
    3,511.20x = 9,790,199.41
  5. Step 5: Solve for x
    x = 9,790,199.41/3,511.20
  6. Step 6: Final answer
    x = 2,788.28

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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.