Home / 1,618.41-2,229.62-1,321.95

Finding the Fourth Proportional to 1,618.41, 2,229.62 and 1,321.95

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Solution

The fourth proportional to 1,618.41, 2,229.62 and 1,321.95 is: 1,821.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.41 : 2,229.62 = 1,321.95 : x
  2. Step 2: Convert to fraction form
    1,618.41/2,229.62 = 1,321.95/x
  3. Step 3: Cross multiply
    1,618.41x = 2,229.62 × 1,321.95
  4. Step 4: Simplify right side
    1,618.41x = 2,947,439.55
  5. Step 5: Solve for x
    x = 2,947,439.55/1,618.41
  6. Step 6: Final answer
    x = 1,821.19

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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.