Home / 5,213.20-7,194-2,855.30

Finding the Fourth Proportional to 5,213.20, 7,194 and 2,855.30

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Solution

The fourth proportional to 5,213.20, 7,194 and 2,855.30 is: 3,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.20 : 7,194 = 2,855.30 : x
  2. Step 2: Convert to fraction form
    5,213.20/7,194 = 2,855.30/x
  3. Step 3: Cross multiply
    5,213.20x = 7,194 × 2,855.30
  4. Step 4: Simplify right side
    5,213.20x = 20,541,028.20
  5. Step 5: Solve for x
    x = 20,541,028.20/5,213.20
  6. Step 6: Final answer
    x = 3,940.20

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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.