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Finding the Fourth Proportional to 8,324.58, 11,489.88 and 4,789.86

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Solution

The fourth proportional to 8,324.58, 11,489.88 and 4,789.86 is: 6,611.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.58 : 11,489.88 = 4,789.86 : x
  2. Step 2: Convert to fraction form
    8,324.58/11,489.88 = 4,789.86/x
  3. Step 3: Cross multiply
    8,324.58x = 11,489.88 × 4,789.86
  4. Step 4: Simplify right side
    8,324.58x = 55,034,916.62
  5. Step 5: Solve for x
    x = 55,034,916.62/8,324.58
  6. Step 6: Final answer
    x = 6,611.13

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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.