Home / 5,475.72-8,213.32-2,187.92

Finding the Fourth Proportional to 5,475.72, 8,213.32 and 2,187.92

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Solution

The fourth proportional to 5,475.72, 8,213.32 and 2,187.92 is: 3,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.72 : 8,213.32 = 2,187.92 : x
  2. Step 2: Convert to fraction form
    5,475.72/8,213.32 = 2,187.92/x
  3. Step 3: Cross multiply
    5,475.72x = 8,213.32 × 2,187.92
  4. Step 4: Simplify right side
    5,475.72x = 17,970,087.09
  5. Step 5: Solve for x
    x = 17,970,087.09/5,475.72
  6. Step 6: Final answer
    x = 3,281.78

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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.