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Finding the Fourth Proportional to 8,451.42, 12,676.42 and 2,608.08

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Solution

The fourth proportional to 8,451.42, 12,676.42 and 2,608.08 is: 3,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.42 : 12,676.42 = 2,608.08 : x
  2. Step 2: Convert to fraction form
    8,451.42/12,676.42 = 2,608.08/x
  3. Step 3: Cross multiply
    8,451.42x = 12,676.42 × 2,608.08
  4. Step 4: Simplify right side
    8,451.42x = 33,061,117.47
  5. Step 5: Solve for x
    x = 33,061,117.47/8,451.42
  6. Step 6: Final answer
    x = 3,911.90

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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.