Home / 4,939.89-6,819.34-3,172.52

Finding the Fourth Proportional to 4,939.89, 6,819.34 and 3,172.52

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Solution

The fourth proportional to 4,939.89, 6,819.34 and 3,172.52 is: 4,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.89 : 6,819.34 = 3,172.52 : x
  2. Step 2: Convert to fraction form
    4,939.89/6,819.34 = 3,172.52/x
  3. Step 3: Cross multiply
    4,939.89x = 6,819.34 × 3,172.52
  4. Step 4: Simplify right side
    4,939.89x = 21,634,469.24
  5. Step 5: Solve for x
    x = 21,634,469.24/4,939.89
  6. Step 6: Final answer
    x = 4,379.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.