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Finding the Fourth Proportional to 8,611.79, 12,910.19 and 7,304.04

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Solution

The fourth proportional to 8,611.79, 12,910.19 and 7,304.04 is: 10,949.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.79 : 12,910.19 = 7,304.04 : x
  2. Step 2: Convert to fraction form
    8,611.79/12,910.19 = 7,304.04/x
  3. Step 3: Cross multiply
    8,611.79x = 12,910.19 × 7,304.04
  4. Step 4: Simplify right side
    8,611.79x = 94,296,507.65
  5. Step 5: Solve for x
    x = 94,296,507.65/8,611.79
  6. Step 6: Final answer
    x = 10,949.71

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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.