Home / 7,958.39-11,936.66-2,115.45

Finding the Fourth Proportional to 7,958.39, 11,936.66 and 2,115.45

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Solution

The fourth proportional to 7,958.39, 11,936.66 and 2,115.45 is: 3,172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.39 : 11,936.66 = 2,115.45 : x
  2. Step 2: Convert to fraction form
    7,958.39/11,936.66 = 2,115.45/x
  3. Step 3: Cross multiply
    7,958.39x = 11,936.66 × 2,115.45
  4. Step 4: Simplify right side
    7,958.39x = 25,251,396.82
  5. Step 5: Solve for x
    x = 25,251,396.82/7,958.39
  6. Step 6: Final answer
    x = 3,172.93

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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.