Home / 3,845.78-5,747.60-2,807.97

Finding the Fourth Proportional to 3,845.78, 5,747.60 and 2,807.97

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Solution

The fourth proportional to 3,845.78, 5,747.60 and 2,807.97 is: 4,196.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.78 : 5,747.60 = 2,807.97 : x
  2. Step 2: Convert to fraction form
    3,845.78/5,747.60 = 2,807.97/x
  3. Step 3: Cross multiply
    3,845.78x = 5,747.60 × 2,807.97
  4. Step 4: Simplify right side
    3,845.78x = 16,139,084.86
  5. Step 5: Solve for x
    x = 16,139,084.86/3,845.78
  6. Step 6: Final answer
    x = 4,196.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.