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Finding the Fourth Proportional to 3,114.57, 4,666.57 and 1,879.39

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Solution

The fourth proportional to 3,114.57, 4,666.57 and 1,879.39 is: 2,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.57 : 4,666.57 = 1,879.39 : x
  2. Step 2: Convert to fraction form
    3,114.57/4,666.57 = 1,879.39/x
  3. Step 3: Cross multiply
    3,114.57x = 4,666.57 × 1,879.39
  4. Step 4: Simplify right side
    3,114.57x = 8,770,295.68
  5. Step 5: Solve for x
    x = 8,770,295.68/3,114.57
  6. Step 6: Final answer
    x = 2,815.89

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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.