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Finding the Fourth Proportional to 2,891.91, 4,336.11 and 943.86

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Solution

The fourth proportional to 2,891.91, 4,336.11 and 943.86 is: 1,415.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.91 : 4,336.11 = 943.86 : x
  2. Step 2: Convert to fraction form
    2,891.91/4,336.11 = 943.86/x
  3. Step 3: Cross multiply
    2,891.91x = 4,336.11 × 943.86
  4. Step 4: Simplify right side
    2,891.91x = 4,092,680.78
  5. Step 5: Solve for x
    x = 4,092,680.78/2,891.91
  6. Step 6: Final answer
    x = 1,415.22

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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.