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Finding the Fourth Proportional to 5,982.89, 8,978.44 and 2,087.30

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Solution

The fourth proportional to 5,982.89, 8,978.44 and 2,087.30 is: 3,132.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,982.89 : 8,978.44 = 2,087.30 : x
  2. Step 2: Convert to fraction form
    5,982.89/8,978.44 = 2,087.30/x
  3. Step 3: Cross multiply
    5,982.89x = 8,978.44 × 2,087.30
  4. Step 4: Simplify right side
    5,982.89x = 18,740,686.59
  5. Step 5: Solve for x
    x = 18,740,686.59/5,982.89
  6. Step 6: Final answer
    x = 3,132.38

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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.