Home / 4,278.10-6,406.20-3,789.67

Finding the Fourth Proportional to 4,278.10, 6,406.20 and 3,789.67

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Solution

The fourth proportional to 4,278.10, 6,406.20 and 3,789.67 is: 5,674.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.10 : 6,406.20 = 3,789.67 : x
  2. Step 2: Convert to fraction form
    4,278.10/6,406.20 = 3,789.67/x
  3. Step 3: Cross multiply
    4,278.10x = 6,406.20 × 3,789.67
  4. Step 4: Simplify right side
    4,278.10x = 24,277,383.95
  5. Step 5: Solve for x
    x = 24,277,383.95/4,278.10
  6. Step 6: Final answer
    x = 5,674.81

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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.