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Finding the Fourth Proportional to 8,601.22, 12,912.78 and 7,310.89

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Solution

The fourth proportional to 8,601.22, 12,912.78 and 7,310.89 is: 10,975.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.22 : 12,912.78 = 7,310.89 : x
  2. Step 2: Convert to fraction form
    8,601.22/12,912.78 = 7,310.89/x
  3. Step 3: Cross multiply
    8,601.22x = 12,912.78 × 7,310.89
  4. Step 4: Simplify right side
    8,601.22x = 94,403,914.17
  5. Step 5: Solve for x
    x = 94,403,914.17/8,601.22
  6. Step 6: Final answer
    x = 10,975.64

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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.