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Finding the Fourth Proportional to 8,165.34, 12,249.54 and 2,620.08

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Solution

The fourth proportional to 8,165.34, 12,249.54 and 2,620.08 is: 3,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.34 : 12,249.54 = 2,620.08 : x
  2. Step 2: Convert to fraction form
    8,165.34/12,249.54 = 2,620.08/x
  3. Step 3: Cross multiply
    8,165.34x = 12,249.54 × 2,620.08
  4. Step 4: Simplify right side
    8,165.34x = 32,094,774.76
  5. Step 5: Solve for x
    x = 32,094,774.76/8,165.34
  6. Step 6: Final answer
    x = 3,930.61

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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.