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Finding the Fourth Proportional to 3,137.97, 4,330.26 and 1,879.74

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Solution

The fourth proportional to 3,137.97, 4,330.26 and 1,879.74 is: 2,593.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.97 : 4,330.26 = 1,879.74 : x
  2. Step 2: Convert to fraction form
    3,137.97/4,330.26 = 1,879.74/x
  3. Step 3: Cross multiply
    3,137.97x = 4,330.26 × 1,879.74
  4. Step 4: Simplify right side
    3,137.97x = 8,139,762.93
  5. Step 5: Solve for x
    x = 8,139,762.93/3,137.97
  6. Step 6: Final answer
    x = 2,593.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.