Home / 5,811.88-8,718.54-2,115.85

Finding the Fourth Proportional to 5,811.88, 8,718.54 and 2,115.85

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Solution

The fourth proportional to 5,811.88, 8,718.54 and 2,115.85 is: 3,174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.88 : 8,718.54 = 2,115.85 : x
  2. Step 2: Convert to fraction form
    5,811.88/8,718.54 = 2,115.85/x
  3. Step 3: Cross multiply
    5,811.88x = 8,718.54 × 2,115.85
  4. Step 4: Simplify right side
    5,811.88x = 18,447,122.86
  5. Step 5: Solve for x
    x = 18,447,122.86/5,811.88
  6. Step 6: Final answer
    x = 3,174.04

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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.