Home / 3,819.54-5,728.88-1,221.86

Finding the Fourth Proportional to 3,819.54, 5,728.88 and 1,221.86

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Solution

The fourth proportional to 3,819.54, 5,728.88 and 1,221.86 is: 1,832.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.54 : 5,728.88 = 1,221.86 : x
  2. Step 2: Convert to fraction form
    3,819.54/5,728.88 = 1,221.86/x
  3. Step 3: Cross multiply
    3,819.54x = 5,728.88 × 1,221.86
  4. Step 4: Simplify right side
    3,819.54x = 6,999,889.32
  5. Step 5: Solve for x
    x = 6,999,889.32/3,819.54
  6. Step 6: Final answer
    x = 1,832.65

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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.