Home / 3,971.44-5,480.70-2,179

Finding the Fourth Proportional to 3,971.44, 5,480.70 and 2,179

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Solution

The fourth proportional to 3,971.44, 5,480.70 and 2,179 is: 3,007.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.44 : 5,480.70 = 2,179 : x
  2. Step 2: Convert to fraction form
    3,971.44/5,480.70 = 2,179/x
  3. Step 3: Cross multiply
    3,971.44x = 5,480.70 × 2,179
  4. Step 4: Simplify right side
    3,971.44x = 11,942,445.30
  5. Step 5: Solve for x
    x = 11,942,445.30/3,971.44
  6. Step 6: Final answer
    x = 3,007.08

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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.