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Finding the Fourth Proportional to 8,793.87, 12,139.26 and 8,556.94

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Solution

The fourth proportional to 8,793.87, 12,139.26 and 8,556.94 is: 11,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.87 : 12,139.26 = 8,556.94 : x
  2. Step 2: Convert to fraction form
    8,793.87/12,139.26 = 8,556.94/x
  3. Step 3: Cross multiply
    8,793.87x = 12,139.26 × 8,556.94
  4. Step 4: Simplify right side
    8,793.87x = 103,874,919.46
  5. Step 5: Solve for x
    x = 103,874,919.46/8,793.87
  6. Step 6: Final answer
    x = 11,812.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.