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Finding the Fourth Proportional to 5,400.80, 8,104.80 and 3,060.80

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Solution

The fourth proportional to 5,400.80, 8,104.80 and 3,060.80 is: 4,593.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,400.80 : 8,104.80 = 3,060.80 : x
  2. Step 2: Convert to fraction form
    5,400.80/8,104.80 = 3,060.80/x
  3. Step 3: Cross multiply
    5,400.80x = 8,104.80 × 3,060.80
  4. Step 4: Simplify right side
    5,400.80x = 24,807,171.84
  5. Step 5: Solve for x
    x = 24,807,171.84/5,400.80
  6. Step 6: Final answer
    x = 4,593.24

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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.