Home / 3,948.36-5,448.78-2,179.86

Finding the Fourth Proportional to 3,948.36, 5,448.78 and 2,179.86

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Solution

The fourth proportional to 3,948.36, 5,448.78 and 2,179.86 is: 3,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.36 : 5,448.78 = 2,179.86 : x
  2. Step 2: Convert to fraction form
    3,948.36/5,448.78 = 2,179.86/x
  3. Step 3: Cross multiply
    3,948.36x = 5,448.78 × 2,179.86
  4. Step 4: Simplify right side
    3,948.36x = 11,877,577.57
  5. Step 5: Solve for x
    x = 11,877,577.57/3,948.36
  6. Step 6: Final answer
    x = 3,008.23

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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.