Home / 3,948.21-5,448.46-2,179.77

Finding the Fourth Proportional to 3,948.21, 5,448.46 and 2,179.77

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Solution

The fourth proportional to 3,948.21, 5,448.46 and 2,179.77 is: 3,008.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.21 : 5,448.46 = 2,179.77 : x
  2. Step 2: Convert to fraction form
    3,948.21/5,448.46 = 2,179.77/x
  3. Step 3: Cross multiply
    3,948.21x = 5,448.46 × 2,179.77
  4. Step 4: Simplify right side
    3,948.21x = 11,876,389.65
  5. Step 5: Solve for x
    x = 11,876,389.65/3,948.21
  6. Step 6: Final answer
    x = 3,008.04

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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.