Home / 3,948.15-5,448.42-2,179.76

Finding the Fourth Proportional to 3,948.15, 5,448.42 and 2,179.76

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Solution

The fourth proportional to 3,948.15, 5,448.42 and 2,179.76 is: 3,008.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.15 : 5,448.42 = 2,179.76 : x
  2. Step 2: Convert to fraction form
    3,948.15/5,448.42 = 2,179.76/x
  3. Step 3: Cross multiply
    3,948.15x = 5,448.42 × 2,179.76
  4. Step 4: Simplify right side
    3,948.15x = 11,876,247.98
  5. Step 5: Solve for x
    x = 11,876,247.98/3,948.15
  6. Step 6: Final answer
    x = 3,008.05

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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.