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Finding the Fourth Proportional to 2,992.59, 4,129.09 and 1,813.41

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Solution

The fourth proportional to 2,992.59, 4,129.09 and 1,813.41 is: 2,502.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.59 : 4,129.09 = 1,813.41 : x
  2. Step 2: Convert to fraction form
    2,992.59/4,129.09 = 1,813.41/x
  3. Step 3: Cross multiply
    2,992.59x = 4,129.09 × 1,813.41
  4. Step 4: Simplify right side
    2,992.59x = 7,487,724.03
  5. Step 5: Solve for x
    x = 7,487,724.03/2,992.59
  6. Step 6: Final answer
    x = 2,502.09

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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.