Home / 5,219.68-7,203.42-2,861.80

Finding the Fourth Proportional to 5,219.68, 7,203.42 and 2,861.80

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Solution

The fourth proportional to 5,219.68, 7,203.42 and 2,861.80 is: 3,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.68 : 7,203.42 = 2,861.80 : x
  2. Step 2: Convert to fraction form
    5,219.68/7,203.42 = 2,861.80/x
  3. Step 3: Cross multiply
    5,219.68x = 7,203.42 × 2,861.80
  4. Step 4: Simplify right side
    5,219.68x = 20,614,747.36
  5. Step 5: Solve for x
    x = 20,614,747.36/5,219.68
  6. Step 6: Final answer
    x = 3,949.43

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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.