Home / 3,948.49-5,448.83-2,155.91

Finding the Fourth Proportional to 3,948.49, 5,448.83 and 2,155.91

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Solution

The fourth proportional to 3,948.49, 5,448.83 and 2,155.91 is: 2,975.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.49 : 5,448.83 = 2,155.91 : x
  2. Step 2: Convert to fraction form
    3,948.49/5,448.83 = 2,155.91/x
  3. Step 3: Cross multiply
    3,948.49x = 5,448.83 × 2,155.91
  4. Step 4: Simplify right side
    3,948.49x = 11,747,187.09
  5. Step 5: Solve for x
    x = 11,747,187.09/3,948.49
  6. Step 6: Final answer
    x = 2,975.11

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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.