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Finding the Fourth Proportional to 8,290.98, 12,440.12 and 2,745.12

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Solution

The fourth proportional to 8,290.98, 12,440.12 and 2,745.12 is: 4,118.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.98 : 12,440.12 = 2,745.12 : x
  2. Step 2: Convert to fraction form
    8,290.98/12,440.12 = 2,745.12/x
  3. Step 3: Cross multiply
    8,290.98x = 12,440.12 × 2,745.12
  4. Step 4: Simplify right side
    8,290.98x = 34,149,608.49
  5. Step 5: Solve for x
    x = 34,149,608.49/8,290.98
  6. Step 6: Final answer
    x = 4,118.89

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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.