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Finding the Fourth Proportional to 2,181.44, 3,018.12 and 2,100.44

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Solution

The fourth proportional to 2,181.44, 3,018.12 and 2,100.44 is: 2,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.44 : 3,018.12 = 2,100.44 : x
  2. Step 2: Convert to fraction form
    2,181.44/3,018.12 = 2,100.44/x
  3. Step 3: Cross multiply
    2,181.44x = 3,018.12 × 2,100.44
  4. Step 4: Simplify right side
    2,181.44x = 6,339,379.97
  5. Step 5: Solve for x
    x = 6,339,379.97/2,181.44
  6. Step 6: Final answer
    x = 2,906.05

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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.