Home / 3,948.11-5,448.35-2,179.72

Finding the Fourth Proportional to 3,948.11, 5,448.35 and 2,179.72

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Solution

The fourth proportional to 3,948.11, 5,448.35 and 2,179.72 is: 3,007.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.11 : 5,448.35 = 2,179.72 : x
  2. Step 2: Convert to fraction form
    3,948.11/5,448.35 = 2,179.72/x
  3. Step 3: Cross multiply
    3,948.11x = 5,448.35 × 2,179.72
  4. Step 4: Simplify right side
    3,948.11x = 11,875,866.56
  5. Step 5: Solve for x
    x = 11,875,866.56/3,948.11
  6. Step 6: Final answer
    x = 3,007.99

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1.5x scale

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.