Home / 3,900.83-5,383.13-2,132.43

Finding the Fourth Proportional to 3,900.83, 5,383.13 and 2,132.43

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Solution

The fourth proportional to 3,900.83, 5,383.13 and 2,132.43 is: 2,942.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.83 : 5,383.13 = 2,132.43 : x
  2. Step 2: Convert to fraction form
    3,900.83/5,383.13 = 2,132.43/x
  3. Step 3: Cross multiply
    3,900.83x = 5,383.13 × 2,132.43
  4. Step 4: Simplify right side
    3,900.83x = 11,479,153.24
  5. Step 5: Solve for x
    x = 11,479,153.24/3,900.83
  6. Step 6: Final answer
    x = 2,942.75

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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.