Home / 4,939.89-6,821.62-3,174.60

Finding the Fourth Proportional to 4,939.89, 6,821.62 and 3,174.60

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Solution

The fourth proportional to 4,939.89, 6,821.62 and 3,174.60 is: 4,383.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.89 : 6,821.62 = 3,174.60 : x
  2. Step 2: Convert to fraction form
    4,939.89/6,821.62 = 3,174.60/x
  3. Step 3: Cross multiply
    4,939.89x = 6,821.62 × 3,174.60
  4. Step 4: Simplify right side
    4,939.89x = 21,655,914.85
  5. Step 5: Solve for x
    x = 21,655,914.85/4,939.89
  6. Step 6: Final answer
    x = 4,383.89

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1.5x scale

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.