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Finding the Fourth Proportional to 7,181.67, 9,909.22 and 4,196.92

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Solution

The fourth proportional to 7,181.67, 9,909.22 and 4,196.92 is: 5,790.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.67 : 9,909.22 = 4,196.92 : x
  2. Step 2: Convert to fraction form
    7,181.67/9,909.22 = 4,196.92/x
  3. Step 3: Cross multiply
    7,181.67x = 9,909.22 × 4,196.92
  4. Step 4: Simplify right side
    7,181.67x = 41,588,178.83
  5. Step 5: Solve for x
    x = 41,588,178.83/7,181.67
  6. Step 6: Final answer
    x = 5,790.88

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Half scale
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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.