Home / 1,990.68-2,745.26-1,517.75

Finding the Fourth Proportional to 1,990.68, 2,745.26 and 1,517.75

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Solution

The fourth proportional to 1,990.68, 2,745.26 and 1,517.75 is: 2,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.68 : 2,745.26 = 1,517.75 : x
  2. Step 2: Convert to fraction form
    1,990.68/2,745.26 = 1,517.75/x
  3. Step 3: Cross multiply
    1,990.68x = 2,745.26 × 1,517.75
  4. Step 4: Simplify right side
    1,990.68x = 4,166,597.05
  5. Step 5: Solve for x
    x = 4,166,597.05/1,990.68
  6. Step 6: Final answer
    x = 2,093.05

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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.