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Finding the Fourth Proportional to 5,985.87, 8,978.85 and 2,090.28

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Solution

The fourth proportional to 5,985.87, 8,978.85 and 2,090.28 is: 3,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,985.87 : 8,978.85 = 2,090.28 : x
  2. Step 2: Convert to fraction form
    5,985.87/8,978.85 = 2,090.28/x
  3. Step 3: Cross multiply
    5,985.87x = 8,978.85 × 2,090.28
  4. Step 4: Simplify right side
    5,985.87x = 18,768,310.58
  5. Step 5: Solve for x
    x = 18,768,310.58/5,985.87
  6. Step 6: Final answer
    x = 3,135.44

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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.