Home / 3,489.45-5,233.11-2,181.21

Finding the Fourth Proportional to 3,489.45, 5,233.11 and 2,181.21

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Solution

The fourth proportional to 3,489.45, 5,233.11 and 2,181.21 is: 3,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.45 : 5,233.11 = 2,181.21 : x
  2. Step 2: Convert to fraction form
    3,489.45/5,233.11 = 2,181.21/x
  3. Step 3: Cross multiply
    3,489.45x = 5,233.11 × 2,181.21
  4. Step 4: Simplify right side
    3,489.45x = 11,414,511.86
  5. Step 5: Solve for x
    x = 11,414,511.86/3,489.45
  6. Step 6: Final answer
    x = 3,271.15

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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.