Home / 7,997.40-11,995.16-2,154.47

Finding the Fourth Proportional to 7,997.40, 11,995.16 and 2,154.47

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Solution

The fourth proportional to 7,997.40, 11,995.16 and 2,154.47 is: 3,231.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,997.40 : 11,995.16 = 2,154.47 : x
  2. Step 2: Convert to fraction form
    7,997.40/11,995.16 = 2,154.47/x
  3. Step 3: Cross multiply
    7,997.40x = 11,995.16 × 2,154.47
  4. Step 4: Simplify right side
    7,997.40x = 25,843,141.62
  5. Step 5: Solve for x
    x = 25,843,141.62/7,997.40
  6. Step 6: Final answer
    x = 3,231.44

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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.