Home / 5,817.15-8,721.88-2,118.96

Finding the Fourth Proportional to 5,817.15, 8,721.88 and 2,118.96

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Solution

The fourth proportional to 5,817.15, 8,721.88 and 2,118.96 is: 3,177.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,817.15 : 8,721.88 = 2,118.96 : x
  2. Step 2: Convert to fraction form
    5,817.15/8,721.88 = 2,118.96/x
  3. Step 3: Cross multiply
    5,817.15x = 8,721.88 × 2,118.96
  4. Step 4: Simplify right side
    5,817.15x = 18,481,309.55
  5. Step 5: Solve for x
    x = 18,481,309.55/5,817.15
  6. Step 6: Final answer
    x = 3,177.04

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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.