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Finding the Fourth Proportional to 7,995.11, 11,992.86 and 2,151.77

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Solution

The fourth proportional to 7,995.11, 11,992.86 and 2,151.77 is: 3,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.11 : 11,992.86 = 2,151.77 : x
  2. Step 2: Convert to fraction form
    7,995.11/11,992.86 = 2,151.77/x
  3. Step 3: Cross multiply
    7,995.11x = 11,992.86 × 2,151.77
  4. Step 4: Simplify right side
    7,995.11x = 25,805,816.40
  5. Step 5: Solve for x
    x = 25,805,816.40/7,995.11
  6. Step 6: Final answer
    x = 3,227.70

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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.