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Finding the Fourth Proportional to 5,520.12, 8,280 and 2,400.13

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Solution

The fourth proportional to 5,520.12, 8,280 and 2,400.13 is: 3,600.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.12 : 8,280 = 2,400.13 : x
  2. Step 2: Convert to fraction form
    5,520.12/8,280 = 2,400.13/x
  3. Step 3: Cross multiply
    5,520.12x = 8,280 × 2,400.13
  4. Step 4: Simplify right side
    5,520.12x = 19,873,076.40
  5. Step 5: Solve for x
    x = 19,873,076.40/5,520.12
  6. Step 6: Final answer
    x = 3,600.12

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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.