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Finding the Fourth Proportional to 7,893.20, 11,839.80 and 4,604.60

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Solution

The fourth proportional to 7,893.20, 11,839.80 and 4,604.60 is: 6,906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.20 : 11,839.80 = 4,604.60 : x
  2. Step 2: Convert to fraction form
    7,893.20/11,839.80 = 4,604.60/x
  3. Step 3: Cross multiply
    7,893.20x = 11,839.80 × 4,604.60
  4. Step 4: Simplify right side
    7,893.20x = 54,517,543.08
  5. Step 5: Solve for x
    x = 54,517,543.08/7,893.20
  6. Step 6: Final answer
    x = 6,906.90

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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.