Home / 7,958.14-11,936.27-2,115.20

Finding the Fourth Proportional to 7,958.14, 11,936.27 and 2,115.20

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Solution

The fourth proportional to 7,958.14, 11,936.27 and 2,115.20 is: 3,172.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.14 : 11,936.27 = 2,115.20 : x
  2. Step 2: Convert to fraction form
    7,958.14/11,936.27 = 2,115.20/x
  3. Step 3: Cross multiply
    7,958.14x = 11,936.27 × 2,115.20
  4. Step 4: Simplify right side
    7,958.14x = 25,247,598.30
  5. Step 5: Solve for x
    x = 25,247,598.30/7,958.14
  6. Step 6: Final answer
    x = 3,172.55

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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.