Home / 5,271.97-7,905.78-2,149.86

Finding the Fourth Proportional to 5,271.97, 7,905.78 and 2,149.86

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Solution

The fourth proportional to 5,271.97, 7,905.78 and 2,149.86 is: 3,223.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.97 : 7,905.78 = 2,149.86 : x
  2. Step 2: Convert to fraction form
    5,271.97/7,905.78 = 2,149.86/x
  3. Step 3: Cross multiply
    5,271.97x = 7,905.78 × 2,149.86
  4. Step 4: Simplify right side
    5,271.97x = 16,996,289.68
  5. Step 5: Solve for x
    x = 16,996,289.68/5,271.97
  6. Step 6: Final answer
    x = 3,223.90

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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.