Home / 3,948.30-5,448.60-2,179.87

Finding the Fourth Proportional to 3,948.30, 5,448.60 and 2,179.87

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Solution

The fourth proportional to 3,948.30, 5,448.60 and 2,179.87 is: 3,008.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.30 : 5,448.60 = 2,179.87 : x
  2. Step 2: Convert to fraction form
    3,948.30/5,448.60 = 2,179.87/x
  3. Step 3: Cross multiply
    3,948.30x = 5,448.60 × 2,179.87
  4. Step 4: Simplify right side
    3,948.30x = 11,877,239.68
  5. Step 5: Solve for x
    x = 11,877,239.68/3,948.30
  6. Step 6: Final answer
    x = 3,008.19

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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.