Home / 4,747.36-7,120.83-2,811.88

Finding the Fourth Proportional to 4,747.36, 7,120.83 and 2,811.88

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Solution

The fourth proportional to 4,747.36, 7,120.83 and 2,811.88 is: 4,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.36 : 7,120.83 = 2,811.88 : x
  2. Step 2: Convert to fraction form
    4,747.36/7,120.83 = 2,811.88/x
  3. Step 3: Cross multiply
    4,747.36x = 7,120.83 × 2,811.88
  4. Step 4: Simplify right side
    4,747.36x = 20,022,919.46
  5. Step 5: Solve for x
    x = 20,022,919.46/4,747.36
  6. Step 6: Final answer
    x = 4,217.70

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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.