Home / 7,971.16-11,956.74-2,127.79

Finding the Fourth Proportional to 7,971.16, 11,956.74 and 2,127.79

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Solution

The fourth proportional to 7,971.16, 11,956.74 and 2,127.79 is: 3,191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.16 : 11,956.74 = 2,127.79 : x
  2. Step 2: Convert to fraction form
    7,971.16/11,956.74 = 2,127.79/x
  3. Step 3: Cross multiply
    7,971.16x = 11,956.74 × 2,127.79
  4. Step 4: Simplify right side
    7,971.16x = 25,441,431.80
  5. Step 5: Solve for x
    x = 25,441,431.80/7,971.16
  6. Step 6: Final answer
    x = 3,191.69

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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.