Home / 3,481.05-4,803.94-1,989.21

Finding the Fourth Proportional to 3,481.05, 4,803.94 and 1,989.21

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Solution

The fourth proportional to 3,481.05, 4,803.94 and 1,989.21 is: 2,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.05 : 4,803.94 = 1,989.21 : x
  2. Step 2: Convert to fraction form
    3,481.05/4,803.94 = 1,989.21/x
  3. Step 3: Cross multiply
    3,481.05x = 4,803.94 × 1,989.21
  4. Step 4: Simplify right side
    3,481.05x = 9,556,016.49
  5. Step 5: Solve for x
    x = 9,556,016.49/3,481.05
  6. Step 6: Final answer
    x = 2,745.16

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1.5x scale

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.