Home / 3,971.21-5,480.24-2,202.81

Finding the Fourth Proportional to 3,971.21, 5,480.24 and 2,202.81

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Solution

The fourth proportional to 3,971.21, 5,480.24 and 2,202.81 is: 3,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.21 : 5,480.24 = 2,202.81 : x
  2. Step 2: Convert to fraction form
    3,971.21/5,480.24 = 2,202.81/x
  3. Step 3: Cross multiply
    3,971.21x = 5,480.24 × 2,202.81
  4. Step 4: Simplify right side
    3,971.21x = 12,071,916.46
  5. Step 5: Solve for x
    x = 12,071,916.46/3,971.21
  6. Step 6: Final answer
    x = 3,039.86

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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.