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Finding the Fourth Proportional to 8,760.62, 12,078.79 and 7,624.60

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Solution

The fourth proportional to 8,760.62, 12,078.79 and 7,624.60 is: 10,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.62 : 12,078.79 = 7,624.60 : x
  2. Step 2: Convert to fraction form
    8,760.62/12,078.79 = 7,624.60/x
  3. Step 3: Cross multiply
    8,760.62x = 12,078.79 × 7,624.60
  4. Step 4: Simplify right side
    8,760.62x = 92,095,892.98
  5. Step 5: Solve for x
    x = 92,095,892.98/8,760.62
  6. Step 6: Final answer
    x = 10,512.48

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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.