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Finding the Fourth Proportional to 8,002.80, 12,003.80 and 4,107.60

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Solution

The fourth proportional to 8,002.80, 12,003.80 and 4,107.60 is: 6,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,002.80 : 12,003.80 = 4,107.60 : x
  2. Step 2: Convert to fraction form
    8,002.80/12,003.80 = 4,107.60/x
  3. Step 3: Cross multiply
    8,002.80x = 12,003.80 × 4,107.60
  4. Step 4: Simplify right side
    8,002.80x = 49,306,808.88
  5. Step 5: Solve for x
    x = 49,306,808.88/8,002.80
  6. Step 6: Final answer
    x = 6,161.19

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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.