Home / 5,172.20-7,137.80-2,934.02

Finding the Fourth Proportional to 5,172.20, 7,137.80 and 2,934.02

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Solution

The fourth proportional to 5,172.20, 7,137.80 and 2,934.02 is: 4,049.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.20 : 7,137.80 = 2,934.02 : x
  2. Step 2: Convert to fraction form
    5,172.20/7,137.80 = 2,934.02/x
  3. Step 3: Cross multiply
    5,172.20x = 7,137.80 × 2,934.02
  4. Step 4: Simplify right side
    5,172.20x = 20,942,447.96
  5. Step 5: Solve for x
    x = 20,942,447.96/5,172.20
  6. Step 6: Final answer
    x = 4,049.04

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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.