Home / 5,211.60-7,192.68-2,974.20

Finding the Fourth Proportional to 5,211.60, 7,192.68 and 2,974.20

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Solution

The fourth proportional to 5,211.60, 7,192.68 and 2,974.20 is: 4,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.60 : 7,192.68 = 2,974.20 : x
  2. Step 2: Convert to fraction form
    5,211.60/7,192.68 = 2,974.20/x
  3. Step 3: Cross multiply
    5,211.60x = 7,192.68 × 2,974.20
  4. Step 4: Simplify right side
    5,211.60x = 21,392,468.86
  5. Step 5: Solve for x
    x = 21,392,468.86/5,211.60
  6. Step 6: Final answer
    x = 4,104.78

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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.