Home / 7,997.05-11,990.45-3,320.29

Finding the Fourth Proportional to 7,997.05, 11,990.45 and 3,320.29

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Solution

The fourth proportional to 7,997.05, 11,990.45 and 3,320.29 is: 4,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,997.05 : 11,990.45 = 3,320.29 : x
  2. Step 2: Convert to fraction form
    7,997.05/11,990.45 = 3,320.29/x
  3. Step 3: Cross multiply
    7,997.05x = 11,990.45 × 3,320.29
  4. Step 4: Simplify right side
    7,997.05x = 39,811,747.14
  5. Step 5: Solve for x
    x = 39,811,747.14/7,997.05
  6. Step 6: Final answer
    x = 4,978.30

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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.