Home / 3,900.97-5,383.43-2,132.54

Finding the Fourth Proportional to 3,900.97, 5,383.43 and 2,132.54

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Solution

The fourth proportional to 3,900.97, 5,383.43 and 2,132.54 is: 2,942.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.97 : 5,383.43 = 2,132.54 : x
  2. Step 2: Convert to fraction form
    3,900.97/5,383.43 = 2,132.54/x
  3. Step 3: Cross multiply
    3,900.97x = 5,383.43 × 2,132.54
  4. Step 4: Simplify right side
    3,900.97x = 11,480,379.81
  5. Step 5: Solve for x
    x = 11,480,379.81/3,900.97
  6. Step 6: Final answer
    x = 2,942.96

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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.