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Finding the Fourth Proportional to 8,512.93, 12,749.60 and 8,217.38

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Solution

The fourth proportional to 8,512.93, 12,749.60 and 8,217.38 is: 12,306.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.93 : 12,749.60 = 8,217.38 : x
  2. Step 2: Convert to fraction form
    8,512.93/12,749.60 = 8,217.38/x
  3. Step 3: Cross multiply
    8,512.93x = 12,749.60 × 8,217.38
  4. Step 4: Simplify right side
    8,512.93x = 104,768,360.47
  5. Step 5: Solve for x
    x = 104,768,360.47/8,512.93
  6. Step 6: Final answer
    x = 12,306.97

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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.