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Finding the Fourth Proportional to 8,791.70, 13,181.60 and 4,627.29

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Solution

The fourth proportional to 8,791.70, 13,181.60 and 4,627.29 is: 6,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.70 : 13,181.60 = 4,627.29 : x
  2. Step 2: Convert to fraction form
    8,791.70/13,181.60 = 4,627.29/x
  3. Step 3: Cross multiply
    8,791.70x = 13,181.60 × 4,627.29
  4. Step 4: Simplify right side
    8,791.70x = 60,995,062.73
  5. Step 5: Solve for x
    x = 60,995,062.73/8,791.70
  6. Step 6: Final answer
    x = 6,937.80

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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.