Home / 3,902.28-5,854.50-2,172.12

Finding the Fourth Proportional to 3,902.28, 5,854.50 and 2,172.12

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Solution

The fourth proportional to 3,902.28, 5,854.50 and 2,172.12 is: 3,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.28 : 5,854.50 = 2,172.12 : x
  2. Step 2: Convert to fraction form
    3,902.28/5,854.50 = 2,172.12/x
  3. Step 3: Cross multiply
    3,902.28x = 5,854.50 × 2,172.12
  4. Step 4: Simplify right side
    3,902.28x = 12,716,676.54
  5. Step 5: Solve for x
    x = 12,716,676.54/3,902.28
  6. Step 6: Final answer
    x = 3,258.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.