Home / 3,819.64-5,728.22-1,221.96

Finding the Fourth Proportional to 3,819.64, 5,728.22 and 1,221.96

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Solution

The fourth proportional to 3,819.64, 5,728.22 and 1,221.96 is: 1,832.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.64 : 5,728.22 = 1,221.96 : x
  2. Step 2: Convert to fraction form
    3,819.64/5,728.22 = 1,221.96/x
  3. Step 3: Cross multiply
    3,819.64x = 5,728.22 × 1,221.96
  4. Step 4: Simplify right side
    3,819.64x = 6,999,655.71
  5. Step 5: Solve for x
    x = 6,999,655.71/3,819.64
  6. Step 6: Final answer
    x = 1,832.54

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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.