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Finding the Fourth Proportional to 2,051.89, 3,077.75 and 818.97

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Solution

The fourth proportional to 2,051.89, 3,077.75 and 818.97 is: 1,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.89 : 3,077.75 = 818.97 : x
  2. Step 2: Convert to fraction form
    2,051.89/3,077.75 = 818.97/x
  3. Step 3: Cross multiply
    2,051.89x = 3,077.75 × 818.97
  4. Step 4: Simplify right side
    2,051.89x = 2,520,575.42
  5. Step 5: Solve for x
    x = 2,520,575.42/2,051.89
  6. Step 6: Final answer
    x = 1,228.42

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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.