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Finding the Fourth Proportional to 7,991.66, 11,992.17 and 4,489.58

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Solution

The fourth proportional to 7,991.66, 11,992.17 and 4,489.58 is: 6,737.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.66 : 11,992.17 = 4,489.58 : x
  2. Step 2: Convert to fraction form
    7,991.66/11,992.17 = 4,489.58/x
  3. Step 3: Cross multiply
    7,991.66x = 11,992.17 × 4,489.58
  4. Step 4: Simplify right side
    7,991.66x = 53,839,806.59
  5. Step 5: Solve for x
    x = 53,839,806.59/7,991.66
  6. Step 6: Final answer
    x = 6,737.00

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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.