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Finding the Fourth Proportional to 3,141.86, 4,336.17 and 1,899.86

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Solution

The fourth proportional to 3,141.86, 4,336.17 and 1,899.86 is: 2,622.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.86 : 4,336.17 = 1,899.86 : x
  2. Step 2: Convert to fraction form
    3,141.86/4,336.17 = 1,899.86/x
  3. Step 3: Cross multiply
    3,141.86x = 4,336.17 × 1,899.86
  4. Step 4: Simplify right side
    3,141.86x = 8,238,115.94
  5. Step 5: Solve for x
    x = 8,238,115.94/3,141.86
  6. Step 6: Final answer
    x = 2,622.05

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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.