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Finding the Fourth Proportional to 7,956.88, 11,934.40 and 2,113.96

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Solution

The fourth proportional to 7,956.88, 11,934.40 and 2,113.96 is: 3,170.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.88 : 11,934.40 = 2,113.96 : x
  2. Step 2: Convert to fraction form
    7,956.88/11,934.40 = 2,113.96/x
  3. Step 3: Cross multiply
    7,956.88x = 11,934.40 × 2,113.96
  4. Step 4: Simplify right side
    7,956.88x = 25,228,844.22
  5. Step 5: Solve for x
    x = 25,228,844.22/7,956.88
  6. Step 6: Final answer
    x = 3,170.70

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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.