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Finding the Fourth Proportional to 8,579.39, 12,766.31 and 8,550.23

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Solution

The fourth proportional to 8,579.39, 12,766.31 and 8,550.23 is: 12,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.39 : 12,766.31 = 8,550.23 : x
  2. Step 2: Convert to fraction form
    8,579.39/12,766.31 = 8,550.23/x
  3. Step 3: Cross multiply
    8,579.39x = 12,766.31 × 8,550.23
  4. Step 4: Simplify right side
    8,579.39x = 109,154,812.23
  5. Step 5: Solve for x
    x = 109,154,812.23/8,579.39
  6. Step 6: Final answer
    x = 12,722.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.