Home / 3,453.22-5,181.09-2,155.78

Finding the Fourth Proportional to 3,453.22, 5,181.09 and 2,155.78

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Solution

The fourth proportional to 3,453.22, 5,181.09 and 2,155.78 is: 3,234.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.22 : 5,181.09 = 2,155.78 : x
  2. Step 2: Convert to fraction form
    3,453.22/5,181.09 = 2,155.78/x
  3. Step 3: Cross multiply
    3,453.22x = 5,181.09 × 2,155.78
  4. Step 4: Simplify right side
    3,453.22x = 11,169,290.20
  5. Step 5: Solve for x
    x = 11,169,290.20/3,453.22
  6. Step 6: Final answer
    x = 3,234.46

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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.