Home / 3,819.72-5,729.31-1,187.16

Finding the Fourth Proportional to 3,819.72, 5,729.31 and 1,187.16

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Solution

The fourth proportional to 3,819.72, 5,729.31 and 1,187.16 is: 1,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.72 : 5,729.31 = 1,187.16 : x
  2. Step 2: Convert to fraction form
    3,819.72/5,729.31 = 1,187.16/x
  3. Step 3: Cross multiply
    3,819.72x = 5,729.31 × 1,187.16
  4. Step 4: Simplify right side
    3,819.72x = 6,801,586.17
  5. Step 5: Solve for x
    x = 6,801,586.17/3,819.72
  6. Step 6: Final answer
    x = 1,780.65

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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.