Home / 3,845.31-5,768.84-1,212.80

Finding the Fourth Proportional to 3,845.31, 5,768.84 and 1,212.80

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Solution

The fourth proportional to 3,845.31, 5,768.84 and 1,212.80 is: 1,819.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.31 : 5,768.84 = 1,212.80 : x
  2. Step 2: Convert to fraction form
    3,845.31/5,768.84 = 1,212.80/x
  3. Step 3: Cross multiply
    3,845.31x = 5,768.84 × 1,212.80
  4. Step 4: Simplify right side
    3,845.31x = 6,996,466.61
  5. Step 5: Solve for x
    x = 6,996,466.61/3,845.31
  6. Step 6: Final answer
    x = 1,819.48

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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.