Home / 3,905.09-5,857.82-2,172.41

Finding the Fourth Proportional to 3,905.09, 5,857.82 and 2,172.41

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Solution

The fourth proportional to 3,905.09, 5,857.82 and 2,172.41 is: 3,258.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.09 : 5,857.82 = 2,172.41 : x
  2. Step 2: Convert to fraction form
    3,905.09/5,857.82 = 2,172.41/x
  3. Step 3: Cross multiply
    3,905.09x = 5,857.82 × 2,172.41
  4. Step 4: Simplify right side
    3,905.09x = 12,725,575.88
  5. Step 5: Solve for x
    x = 12,725,575.88/3,905.09
  6. Step 6: Final answer
    x = 3,258.72

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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.