Home / 8,635.38-11,917.97-6,403.62

Finding the Fourth Proportional to 8,635.38, 11,917.97 and 6,403.62

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Solution

The fourth proportional to 8,635.38, 11,917.97 and 6,403.62 is: 8,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.38 : 11,917.97 = 6,403.62 : x
  2. Step 2: Convert to fraction form
    8,635.38/11,917.97 = 6,403.62/x
  3. Step 3: Cross multiply
    8,635.38x = 11,917.97 × 6,403.62
  4. Step 4: Simplify right side
    8,635.38x = 76,318,187.74
  5. Step 5: Solve for x
    x = 76,318,187.74/8,635.38
  6. Step 6: Final answer
    x = 8,837.85

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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.