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Finding the Fourth Proportional to 3,600.09, 5,400.89 and 1,520.10

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Solution

The fourth proportional to 3,600.09, 5,400.89 and 1,520.10 is: 2,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.09 : 5,400.89 = 1,520.10 : x
  2. Step 2: Convert to fraction form
    3,600.09/5,400.89 = 1,520.10/x
  3. Step 3: Cross multiply
    3,600.09x = 5,400.89 × 1,520.10
  4. Step 4: Simplify right side
    3,600.09x = 8,209,910.19
  5. Step 5: Solve for x
    x = 8,209,910.19/3,600.09
  6. Step 6: Final answer
    x = 2,280.47

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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.