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Finding the Fourth Proportional to 8,849.67, 12,207.94 and 7,172.97

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Solution

The fourth proportional to 8,849.67, 12,207.94 and 7,172.97 is: 9,894.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,849.67 : 12,207.94 = 7,172.97 : x
  2. Step 2: Convert to fraction form
    8,849.67/12,207.94 = 7,172.97/x
  3. Step 3: Cross multiply
    8,849.67x = 12,207.94 × 7,172.97
  4. Step 4: Simplify right side
    8,849.67x = 87,567,187.38
  5. Step 5: Solve for x
    x = 87,567,187.38/8,849.67
  6. Step 6: Final answer
    x = 9,894.97

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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.