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Finding the Fourth Proportional to 8,872.42, 13,282.06 and 8,556.99

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Solution

The fourth proportional to 8,872.42, 13,282.06 and 8,556.99 is: 12,809.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.42 : 13,282.06 = 8,556.99 : x
  2. Step 2: Convert to fraction form
    8,872.42/13,282.06 = 8,556.99/x
  3. Step 3: Cross multiply
    8,872.42x = 13,282.06 × 8,556.99
  4. Step 4: Simplify right side
    8,872.42x = 113,654,454.60
  5. Step 5: Solve for x
    x = 113,654,454.60/8,872.42
  6. Step 6: Final answer
    x = 12,809.86

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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.