Home / 8,658.35-12,979.73-3,110.39

Finding the Fourth Proportional to 8,658.35, 12,979.73 and 3,110.39

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Solution

The fourth proportional to 8,658.35, 12,979.73 and 3,110.39 is: 4,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.35 : 12,979.73 = 3,110.39 : x
  2. Step 2: Convert to fraction form
    8,658.35/12,979.73 = 3,110.39/x
  3. Step 3: Cross multiply
    8,658.35x = 12,979.73 × 3,110.39
  4. Step 4: Simplify right side
    8,658.35x = 40,372,022.39
  5. Step 5: Solve for x
    x = 40,372,022.39/8,658.35
  6. Step 6: Final answer
    x = 4,662.78

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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.