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Finding the Fourth Proportional to 2,059.89, 3,089.82 and 520.89

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Solution

The fourth proportional to 2,059.89, 3,089.82 and 520.89 is: 781.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,059.89 : 3,089.82 = 520.89 : x
  2. Step 2: Convert to fraction form
    2,059.89/3,089.82 = 520.89/x
  3. Step 3: Cross multiply
    2,059.89x = 3,089.82 × 520.89
  4. Step 4: Simplify right side
    2,059.89x = 1,609,456.34
  5. Step 5: Solve for x
    x = 1,609,456.34/2,059.89
  6. Step 6: Final answer
    x = 781.33

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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.