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Finding the Fourth Proportional to 5,676.99, 8,514.09 and 1,978.68

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Solution

The fourth proportional to 5,676.99, 8,514.09 and 1,978.68 is: 2,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,676.99 : 8,514.09 = 1,978.68 : x
  2. Step 2: Convert to fraction form
    5,676.99/8,514.09 = 1,978.68/x
  3. Step 3: Cross multiply
    5,676.99x = 8,514.09 × 1,978.68
  4. Step 4: Simplify right side
    5,676.99x = 16,846,659.60
  5. Step 5: Solve for x
    x = 16,846,659.60/5,676.99
  6. Step 6: Final answer
    x = 2,967.53

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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.