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Finding the Fourth Proportional to 8,565.41, 11,819.41 and 4,979.43

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Solution

The fourth proportional to 8,565.41, 11,819.41 and 4,979.43 is: 6,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.41 : 11,819.41 = 4,979.43 : x
  2. Step 2: Convert to fraction form
    8,565.41/11,819.41 = 4,979.43/x
  3. Step 3: Cross multiply
    8,565.41x = 11,819.41 × 4,979.43
  4. Step 4: Simplify right side
    8,565.41x = 58,853,924.74
  5. Step 5: Solve for x
    x = 58,853,924.74/8,565.41
  6. Step 6: Final answer
    x = 6,871.12

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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.