Home / 7,922.18-11,883.38-2,078.79

Finding the Fourth Proportional to 7,922.18, 11,883.38 and 2,078.79

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Solution

The fourth proportional to 7,922.18, 11,883.38 and 2,078.79 is: 3,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.18 : 11,883.38 = 2,078.79 : x
  2. Step 2: Convert to fraction form
    7,922.18/11,883.38 = 2,078.79/x
  3. Step 3: Cross multiply
    7,922.18x = 11,883.38 × 2,078.79
  4. Step 4: Simplify right side
    7,922.18x = 24,703,047.52
  5. Step 5: Solve for x
    x = 24,703,047.52/7,922.18
  6. Step 6: Final answer
    x = 3,118.21

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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.