Home / 7,981.22-11,971.92-2,435.42

Finding the Fourth Proportional to 7,981.22, 11,971.92 and 2,435.42

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Solution

The fourth proportional to 7,981.22, 11,971.92 and 2,435.42 is: 3,653.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.22 : 11,971.92 = 2,435.42 : x
  2. Step 2: Convert to fraction form
    7,981.22/11,971.92 = 2,435.42/x
  3. Step 3: Cross multiply
    7,981.22x = 11,971.92 × 2,435.42
  4. Step 4: Simplify right side
    7,981.22x = 29,156,653.41
  5. Step 5: Solve for x
    x = 29,156,653.41/7,981.22
  6. Step 6: Final answer
    x = 3,653.16

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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.