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Finding the Fourth Proportional to 8,514.86, 11,753.71 and 4,979.21

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Solution

The fourth proportional to 8,514.86, 11,753.71 and 4,979.21 is: 6,873.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,514.86 : 11,753.71 = 4,979.21 : x
  2. Step 2: Convert to fraction form
    8,514.86/11,753.71 = 4,979.21/x
  3. Step 3: Cross multiply
    8,514.86x = 11,753.71 × 4,979.21
  4. Step 4: Simplify right side
    8,514.86x = 58,524,119.15
  5. Step 5: Solve for x
    x = 58,524,119.15/8,514.86
  6. Step 6: Final answer
    x = 6,873.18

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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.