Home / 1,821.66-2,517.20-1,296.78

Finding the Fourth Proportional to 1,821.66, 2,517.20 and 1,296.78

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Solution

The fourth proportional to 1,821.66, 2,517.20 and 1,296.78 is: 1,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.66 : 2,517.20 = 1,296.78 : x
  2. Step 2: Convert to fraction form
    1,821.66/2,517.20 = 1,296.78/x
  3. Step 3: Cross multiply
    1,821.66x = 2,517.20 × 1,296.78
  4. Step 4: Simplify right side
    1,821.66x = 3,264,254.62
  5. Step 5: Solve for x
    x = 3,264,254.62/1,821.66
  6. Step 6: Final answer
    x = 1,791.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.