Home / 5,431-8,147.50-2,469.64

Finding the Fourth Proportional to 5,431, 8,147.50 and 2,469.64

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Solution

The fourth proportional to 5,431, 8,147.50 and 2,469.64 is: 3,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431 : 8,147.50 = 2,469.64 : x
  2. Step 2: Convert to fraction form
    5,431/8,147.50 = 2,469.64/x
  3. Step 3: Cross multiply
    5,431x = 8,147.50 × 2,469.64
  4. Step 4: Simplify right side
    5,431x = 20,121,391.90
  5. Step 5: Solve for x
    x = 20,121,391.90/5,431
  6. Step 6: Final answer
    x = 3,704.91

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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.