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Finding the Fourth Proportional to 3,608.40, 5,396.40 and 3,025.20

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Solution

The fourth proportional to 3,608.40, 5,396.40 and 3,025.20 is: 4,524.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.40 : 5,396.40 = 3,025.20 : x
  2. Step 2: Convert to fraction form
    3,608.40/5,396.40 = 3,025.20/x
  3. Step 3: Cross multiply
    3,608.40x = 5,396.40 × 3,025.20
  4. Step 4: Simplify right side
    3,608.40x = 16,325,189.28
  5. Step 5: Solve for x
    x = 16,325,189.28/3,608.40
  6. Step 6: Final answer
    x = 4,524.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.