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Finding the Fourth Proportional to 8,569.09, 12,858.09 and 3,892.42

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Solution

The fourth proportional to 8,569.09, 12,858.09 and 3,892.42 is: 5,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,569.09 : 12,858.09 = 3,892.42 : x
  2. Step 2: Convert to fraction form
    8,569.09/12,858.09 = 3,892.42/x
  3. Step 3: Cross multiply
    8,569.09x = 12,858.09 × 3,892.42
  4. Step 4: Simplify right side
    8,569.09x = 50,049,086.68
  5. Step 5: Solve for x
    x = 50,049,086.68/8,569.09
  6. Step 6: Final answer
    x = 5,840.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.