Home / 3,968.64-5,949.32-2,121.03

Finding the Fourth Proportional to 3,968.64, 5,949.32 and 2,121.03

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Solution

The fourth proportional to 3,968.64, 5,949.32 and 2,121.03 is: 3,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.64 : 5,949.32 = 2,121.03 : x
  2. Step 2: Convert to fraction form
    3,968.64/5,949.32 = 2,121.03/x
  3. Step 3: Cross multiply
    3,968.64x = 5,949.32 × 2,121.03
  4. Step 4: Simplify right side
    3,968.64x = 12,618,675.59
  5. Step 5: Solve for x
    x = 12,618,675.59/3,968.64
  6. Step 6: Final answer
    x = 3,179.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.