Home / 3,771.91-5,205.83-3,605.79

Finding the Fourth Proportional to 3,771.91, 5,205.83 and 3,605.79

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Solution

The fourth proportional to 3,771.91, 5,205.83 and 3,605.79 is: 4,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.91 : 5,205.83 = 3,605.79 : x
  2. Step 2: Convert to fraction form
    3,771.91/5,205.83 = 3,605.79/x
  3. Step 3: Cross multiply
    3,771.91x = 5,205.83 × 3,605.79
  4. Step 4: Simplify right side
    3,771.91x = 18,771,129.76
  5. Step 5: Solve for x
    x = 18,771,129.76/3,771.91
  6. Step 6: Final answer
    x = 4,976.56

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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.