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Finding the Fourth Proportional to 2,542.91, 3,813.99 and 877.29

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Solution

The fourth proportional to 2,542.91, 3,813.99 and 877.29 is: 1,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.91 : 3,813.99 = 877.29 : x
  2. Step 2: Convert to fraction form
    2,542.91/3,813.99 = 877.29/x
  3. Step 3: Cross multiply
    2,542.91x = 3,813.99 × 877.29
  4. Step 4: Simplify right side
    2,542.91x = 3,345,975.29
  5. Step 5: Solve for x
    x = 3,345,975.29/2,542.91
  6. Step 6: Final answer
    x = 1,315.81

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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.