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Finding the Fourth Proportional to 8,620.73, 12,942.04 and 7,330.40

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Solution

The fourth proportional to 8,620.73, 12,942.04 and 7,330.40 is: 11,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.73 : 12,942.04 = 7,330.40 : x
  2. Step 2: Convert to fraction form
    8,620.73/12,942.04 = 7,330.40/x
  3. Step 3: Cross multiply
    8,620.73x = 12,942.04 × 7,330.40
  4. Step 4: Simplify right side
    8,620.73x = 94,870,330.02
  5. Step 5: Solve for x
    x = 94,870,330.02/8,620.73
  6. Step 6: Final answer
    x = 11,004.91

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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.