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Finding the Fourth Proportional to 8,171.64, 12,257.49 and 2,015.64

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Solution

The fourth proportional to 8,171.64, 12,257.49 and 2,015.64 is: 3,023.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.64 : 12,257.49 = 2,015.64 : x
  2. Step 2: Convert to fraction form
    8,171.64/12,257.49 = 2,015.64/x
  3. Step 3: Cross multiply
    8,171.64x = 12,257.49 × 2,015.64
  4. Step 4: Simplify right side
    8,171.64x = 24,706,687.14
  5. Step 5: Solve for x
    x = 24,706,687.14/8,171.64
  6. Step 6: Final answer
    x = 3,023.47

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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.