Home / 7,990.62-11,028.87-5,191.26

Finding the Fourth Proportional to 7,990.62, 11,028.87 and 5,191.26

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Solution

The fourth proportional to 7,990.62, 11,028.87 and 5,191.26 is: 7,165.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.62 : 11,028.87 = 5,191.26 : x
  2. Step 2: Convert to fraction form
    7,990.62/11,028.87 = 5,191.26/x
  3. Step 3: Cross multiply
    7,990.62x = 11,028.87 × 5,191.26
  4. Step 4: Simplify right side
    7,990.62x = 57,253,731.68
  5. Step 5: Solve for x
    x = 57,253,731.68/7,990.62
  6. Step 6: Final answer
    x = 7,165.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.