Home / 3,178.05-4,769.21-1,205.49

Finding the Fourth Proportional to 3,178.05, 4,769.21 and 1,205.49

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Solution

The fourth proportional to 3,178.05, 4,769.21 and 1,205.49 is: 1,809.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.05 : 4,769.21 = 1,205.49 : x
  2. Step 2: Convert to fraction form
    3,178.05/4,769.21 = 1,205.49/x
  3. Step 3: Cross multiply
    3,178.05x = 4,769.21 × 1,205.49
  4. Step 4: Simplify right side
    3,178.05x = 5,749,234.96
  5. Step 5: Solve for x
    x = 5,749,234.96/3,178.05
  6. Step 6: Final answer
    x = 1,809.04

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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.