Home / 5,638.11-8,454.50-1,687.85

Finding the Fourth Proportional to 5,638.11, 8,454.50 and 1,687.85

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Solution

The fourth proportional to 5,638.11, 8,454.50 and 1,687.85 is: 2,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.11 : 8,454.50 = 1,687.85 : x
  2. Step 2: Convert to fraction form
    5,638.11/8,454.50 = 1,687.85/x
  3. Step 3: Cross multiply
    5,638.11x = 8,454.50 × 1,687.85
  4. Step 4: Simplify right side
    5,638.11x = 14,269,877.11
  5. Step 5: Solve for x
    x = 14,269,877.11/5,638.11
  6. Step 6: Final answer
    x = 2,530.97

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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.