Home / 5,217.50-7,200.16-3,122.12

Finding the Fourth Proportional to 5,217.50, 7,200.16 and 3,122.12

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Solution

The fourth proportional to 5,217.50, 7,200.16 and 3,122.12 is: 4,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.50 : 7,200.16 = 3,122.12 : x
  2. Step 2: Convert to fraction form
    5,217.50/7,200.16 = 3,122.12/x
  3. Step 3: Cross multiply
    5,217.50x = 7,200.16 × 3,122.12
  4. Step 4: Simplify right side
    5,217.50x = 22,479,763.54
  5. Step 5: Solve for x
    x = 22,479,763.54/5,217.50
  6. Step 6: Final answer
    x = 4,308.53

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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.