Home / 5,172.15-7,137.54-2,934.12

Finding the Fourth Proportional to 5,172.15, 7,137.54 and 2,934.12

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Solution

The fourth proportional to 5,172.15, 7,137.54 and 2,934.12 is: 4,049.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.15 : 7,137.54 = 2,934.12 : x
  2. Step 2: Convert to fraction form
    5,172.15/7,137.54 = 2,934.12/x
  3. Step 3: Cross multiply
    5,172.15x = 7,137.54 × 2,934.12
  4. Step 4: Simplify right side
    5,172.15x = 20,942,398.86
  5. Step 5: Solve for x
    x = 20,942,398.86/5,172.15
  6. Step 6: Final answer
    x = 4,049.07

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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.