Home / 7,971.60-11,956.49-2,127.75

Finding the Fourth Proportional to 7,971.60, 11,956.49 and 2,127.75

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Solution

The fourth proportional to 7,971.60, 11,956.49 and 2,127.75 is: 3,191.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.60 : 11,956.49 = 2,127.75 : x
  2. Step 2: Convert to fraction form
    7,971.60/11,956.49 = 2,127.75/x
  3. Step 3: Cross multiply
    7,971.60x = 11,956.49 × 2,127.75
  4. Step 4: Simplify right side
    7,971.60x = 25,440,410.96
  5. Step 5: Solve for x
    x = 25,440,410.96/7,971.60
  6. Step 6: Final answer
    x = 3,191.38

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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.