Home / 5,475.72-8,217.60-2,189.79

Finding the Fourth Proportional to 5,475.72, 8,217.60 and 2,189.79

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Solution

The fourth proportional to 5,475.72, 8,217.60 and 2,189.79 is: 3,286.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.72 : 8,217.60 = 2,189.79 : x
  2. Step 2: Convert to fraction form
    5,475.72/8,217.60 = 2,189.79/x
  3. Step 3: Cross multiply
    5,475.72x = 8,217.60 × 2,189.79
  4. Step 4: Simplify right side
    5,475.72x = 17,994,818.30
  5. Step 5: Solve for x
    x = 17,994,818.30/5,475.72
  6. Step 6: Final answer
    x = 3,286.29

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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.