Home / 2,181.20-3,269.30-1,083.11

Finding the Fourth Proportional to 2,181.20, 3,269.30 and 1,083.11

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Solution

The fourth proportional to 2,181.20, 3,269.30 and 1,083.11 is: 1,623.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.20 : 3,269.30 = 1,083.11 : x
  2. Step 2: Convert to fraction form
    2,181.20/3,269.30 = 1,083.11/x
  3. Step 3: Cross multiply
    2,181.20x = 3,269.30 × 1,083.11
  4. Step 4: Simplify right side
    2,181.20x = 3,540,989.76
  5. Step 5: Solve for x
    x = 3,540,989.76/2,181.20
  6. Step 6: Final answer
    x = 1,623.42

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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.