Home / 7,997.91-11,989.56-2,800.95

Finding the Fourth Proportional to 7,997.91, 11,989.56 and 2,800.95

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Solution

The fourth proportional to 7,997.91, 11,989.56 and 2,800.95 is: 4,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,997.91 : 11,989.56 = 2,800.95 : x
  2. Step 2: Convert to fraction form
    7,997.91/11,989.56 = 2,800.95/x
  3. Step 3: Cross multiply
    7,997.91x = 11,989.56 × 2,800.95
  4. Step 4: Simplify right side
    7,997.91x = 33,582,158.08
  5. Step 5: Solve for x
    x = 33,582,158.08/7,997.91
  6. Step 6: Final answer
    x = 4,198.87

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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.