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Finding the Fourth Proportional to 3,845.76, 5,768.64 and 1,072.32

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Solution

The fourth proportional to 3,845.76, 5,768.64 and 1,072.32 is: 1,608.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.76 : 5,768.64 = 1,072.32 : x
  2. Step 2: Convert to fraction form
    3,845.76/5,768.64 = 1,072.32/x
  3. Step 3: Cross multiply
    3,845.76x = 5,768.64 × 1,072.32
  4. Step 4: Simplify right side
    3,845.76x = 6,185,828.04
  5. Step 5: Solve for x
    x = 6,185,828.04/3,845.76
  6. Step 6: Final answer
    x = 1,608.48

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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.