Home / 5,416.26-8,121.10-2,125.41

Finding the Fourth Proportional to 5,416.26, 8,121.10 and 2,125.41

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Solution

The fourth proportional to 5,416.26, 8,121.10 and 2,125.41 is: 3,186.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.26 : 8,121.10 = 2,125.41 : x
  2. Step 2: Convert to fraction form
    5,416.26/8,121.10 = 2,125.41/x
  3. Step 3: Cross multiply
    5,416.26x = 8,121.10 × 2,125.41
  4. Step 4: Simplify right side
    5,416.26x = 17,260,667.15
  5. Step 5: Solve for x
    x = 17,260,667.15/5,416.26
  6. Step 6: Final answer
    x = 3,186.82

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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.