Home / 2,121.26-3,181.11-734.22

Finding the Fourth Proportional to 2,121.26, 3,181.11 and 734.22

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Solution

The fourth proportional to 2,121.26, 3,181.11 and 734.22 is: 1,101.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.26 : 3,181.11 = 734.22 : x
  2. Step 2: Convert to fraction form
    2,121.26/3,181.11 = 734.22/x
  3. Step 3: Cross multiply
    2,121.26x = 3,181.11 × 734.22
  4. Step 4: Simplify right side
    2,121.26x = 2,335,634.58
  5. Step 5: Solve for x
    x = 2,335,634.58/2,121.26
  6. Step 6: Final answer
    x = 1,101.06

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1.5x scale

Why These Related Problems?

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