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Finding the Fourth Proportional to 2,542.62, 3,814.14 and 811.26

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Solution

The fourth proportional to 2,542.62, 3,814.14 and 811.26 is: 1,216.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.62 : 3,814.14 = 811.26 : x
  2. Step 2: Convert to fraction form
    2,542.62/3,814.14 = 811.26/x
  3. Step 3: Cross multiply
    2,542.62x = 3,814.14 × 811.26
  4. Step 4: Simplify right side
    2,542.62x = 3,094,259.22
  5. Step 5: Solve for x
    x = 3,094,259.22/2,542.62
  6. Step 6: Final answer
    x = 1,216.96

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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.