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Finding the Fourth Proportional to 3,951.78, 5,453.51 and 2,183.37

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Solution

The fourth proportional to 3,951.78, 5,453.51 and 2,183.37 is: 3,013.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.78 : 5,453.51 = 2,183.37 : x
  2. Step 2: Convert to fraction form
    3,951.78/5,453.51 = 2,183.37/x
  3. Step 3: Cross multiply
    3,951.78x = 5,453.51 × 2,183.37
  4. Step 4: Simplify right side
    3,951.78x = 11,907,019.21
  5. Step 5: Solve for x
    x = 11,907,019.21/3,951.78
  6. Step 6: Final answer
    x = 3,013.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.