Home / 5,178.96-7,761.72-2,406.96

Finding the Fourth Proportional to 5,178.96, 7,761.72 and 2,406.96

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Solution

The fourth proportional to 5,178.96, 7,761.72 and 2,406.96 is: 3,607.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.96 : 7,761.72 = 2,406.96 : x
  2. Step 2: Convert to fraction form
    5,178.96/7,761.72 = 2,406.96/x
  3. Step 3: Cross multiply
    5,178.96x = 7,761.72 × 2,406.96
  4. Step 4: Simplify right side
    5,178.96x = 18,682,149.57
  5. Step 5: Solve for x
    x = 18,682,149.57/5,178.96
  6. Step 6: Final answer
    x = 3,607.32

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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.