Home / 3,178.29-4,765.50-1,422.96

Finding the Fourth Proportional to 3,178.29, 4,765.50 and 1,422.96

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Solution

The fourth proportional to 3,178.29, 4,765.50 and 1,422.96 is: 2,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.29 : 4,765.50 = 1,422.96 : x
  2. Step 2: Convert to fraction form
    3,178.29/4,765.50 = 1,422.96/x
  3. Step 3: Cross multiply
    3,178.29x = 4,765.50 × 1,422.96
  4. Step 4: Simplify right side
    3,178.29x = 6,781,115.88
  5. Step 5: Solve for x
    x = 6,781,115.88/3,178.29
  6. Step 6: Final answer
    x = 2,133.57

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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.