Home / 3,900.88-5,383.32-2,132.68

Finding the Fourth Proportional to 3,900.88, 5,383.32 and 2,132.68

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Solution

The fourth proportional to 3,900.88, 5,383.32 and 2,132.68 is: 2,943.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.88 : 5,383.32 = 2,132.68 : x
  2. Step 2: Convert to fraction form
    3,900.88/5,383.32 = 2,132.68/x
  3. Step 3: Cross multiply
    3,900.88x = 5,383.32 × 2,132.68
  4. Step 4: Simplify right side
    3,900.88x = 11,480,898.90
  5. Step 5: Solve for x
    x = 11,480,898.90/3,900.88
  6. Step 6: Final answer
    x = 2,943.16

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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.