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Finding the Fourth Proportional to 7,992.66, 11,989.68 and 2,149.32

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Solution

The fourth proportional to 7,992.66, 11,989.68 and 2,149.32 is: 3,224.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.66 : 11,989.68 = 2,149.32 : x
  2. Step 2: Convert to fraction form
    7,992.66/11,989.68 = 2,149.32/x
  3. Step 3: Cross multiply
    7,992.66x = 11,989.68 × 2,149.32
  4. Step 4: Simplify right side
    7,992.66x = 25,769,659.02
  5. Step 5: Solve for x
    x = 25,769,659.02/7,992.66
  6. Step 6: Final answer
    x = 3,224.17

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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.