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Finding the Fourth Proportional to 8,494.80, 12,743.40 and 2,650.80

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Solution

The fourth proportional to 8,494.80, 12,743.40 and 2,650.80 is: 3,976.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,494.80 : 12,743.40 = 2,650.80 : x
  2. Step 2: Convert to fraction form
    8,494.80/12,743.40 = 2,650.80/x
  3. Step 3: Cross multiply
    8,494.80x = 12,743.40 × 2,650.80
  4. Step 4: Simplify right side
    8,494.80x = 33,780,204.72
  5. Step 5: Solve for x
    x = 33,780,204.72/8,494.80
  6. Step 6: Final answer
    x = 3,976.57

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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.