Home / 6,286.50-9,431.10-2,126.61

Finding the Fourth Proportional to 6,286.50, 9,431.10 and 2,126.61

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Solution

The fourth proportional to 6,286.50, 9,431.10 and 2,126.61 is: 3,190.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,286.50 : 9,431.10 = 2,126.61 : x
  2. Step 2: Convert to fraction form
    6,286.50/9,431.10 = 2,126.61/x
  3. Step 3: Cross multiply
    6,286.50x = 9,431.10 × 2,126.61
  4. Step 4: Simplify right side
    6,286.50x = 20,056,271.57
  5. Step 5: Solve for x
    x = 20,056,271.57/6,286.50
  6. Step 6: Final answer
    x = 3,190.37

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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.