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Finding the Fourth Proportional to 8,579.86, 12,934.08 and 8,008.34

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Solution

The fourth proportional to 8,579.86, 12,934.08 and 8,008.34 is: 12,072.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.86 : 12,934.08 = 8,008.34 : x
  2. Step 2: Convert to fraction form
    8,579.86/12,934.08 = 8,008.34/x
  3. Step 3: Cross multiply
    8,579.86x = 12,934.08 × 8,008.34
  4. Step 4: Simplify right side
    8,579.86x = 103,580,445.56
  5. Step 5: Solve for x
    x = 103,580,445.56/8,579.86
  6. Step 6: Final answer
    x = 12,072.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.