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Finding the Fourth Proportional to 8,608.38, 12,911.35 and 2,764.23

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Solution

The fourth proportional to 8,608.38, 12,911.35 and 2,764.23 is: 4,145.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.38 : 12,911.35 = 2,764.23 : x
  2. Step 2: Convert to fraction form
    8,608.38/12,911.35 = 2,764.23/x
  3. Step 3: Cross multiply
    8,608.38x = 12,911.35 × 2,764.23
  4. Step 4: Simplify right side
    8,608.38x = 35,689,876.45
  5. Step 5: Solve for x
    x = 35,689,876.45/8,608.38
  6. Step 6: Final answer
    x = 4,145.95

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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.