Home / 3,178.36-4,770.78-2,191.24

Finding the Fourth Proportional to 3,178.36, 4,770.78 and 2,191.24

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Solution

The fourth proportional to 3,178.36, 4,770.78 and 2,191.24 is: 3,289.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.36 : 4,770.78 = 2,191.24 : x
  2. Step 2: Convert to fraction form
    3,178.36/4,770.78 = 2,191.24/x
  3. Step 3: Cross multiply
    3,178.36x = 4,770.78 × 2,191.24
  4. Step 4: Simplify right side
    3,178.36x = 10,453,923.97
  5. Step 5: Solve for x
    x = 10,453,923.97/3,178.36
  6. Step 6: Final answer
    x = 3,289.09

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1.5x scale

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.