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Finding the Fourth Proportional to 7,992.50, 11,990.10 and 2,726.96

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Solution

The fourth proportional to 7,992.50, 11,990.10 and 2,726.96 is: 4,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.50 : 11,990.10 = 2,726.96 : x
  2. Step 2: Convert to fraction form
    7,992.50/11,990.10 = 2,726.96/x
  3. Step 3: Cross multiply
    7,992.50x = 11,990.10 × 2,726.96
  4. Step 4: Simplify right side
    7,992.50x = 32,696,523.10
  5. Step 5: Solve for x
    x = 32,696,523.10/7,992.50
  6. Step 6: Final answer
    x = 4,090.90

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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.