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Finding the Fourth Proportional to 8,622.26, 12,938.25 and 8,556.38

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Solution

The fourth proportional to 8,622.26, 12,938.25 and 8,556.38 is: 12,839.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.26 : 12,938.25 = 8,556.38 : x
  2. Step 2: Convert to fraction form
    8,622.26/12,938.25 = 8,556.38/x
  3. Step 3: Cross multiply
    8,622.26x = 12,938.25 × 8,556.38
  4. Step 4: Simplify right side
    8,622.26x = 110,704,583.54
  5. Step 5: Solve for x
    x = 110,704,583.54/8,622.26
  6. Step 6: Final answer
    x = 12,839.39

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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.