Home / 7,958.88-11,937.40-2,115.96

Finding the Fourth Proportional to 7,958.88, 11,937.40 and 2,115.96

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Solution

The fourth proportional to 7,958.88, 11,937.40 and 2,115.96 is: 3,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.88 : 11,937.40 = 2,115.96 : x
  2. Step 2: Convert to fraction form
    7,958.88/11,937.40 = 2,115.96/x
  3. Step 3: Cross multiply
    7,958.88x = 11,937.40 × 2,115.96
  4. Step 4: Simplify right side
    7,958.88x = 25,259,060.90
  5. Step 5: Solve for x
    x = 25,259,060.90/7,958.88
  6. Step 6: Final answer
    x = 3,173.70

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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.