Home / 5,481.75-8,221.72-1,971.05

Finding the Fourth Proportional to 5,481.75, 8,221.72 and 1,971.05

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Solution

The fourth proportional to 5,481.75, 8,221.72 and 1,971.05 is: 2,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.75 : 8,221.72 = 1,971.05 : x
  2. Step 2: Convert to fraction form
    5,481.75/8,221.72 = 1,971.05/x
  3. Step 3: Cross multiply
    5,481.75x = 8,221.72 × 1,971.05
  4. Step 4: Simplify right side
    5,481.75x = 16,205,382.11
  5. Step 5: Solve for x
    x = 16,205,382.11/5,481.75
  6. Step 6: Final answer
    x = 2,956.24

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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.