Home / 5,791.20-8,686.72-1,408.66

Finding the Fourth Proportional to 5,791.20, 8,686.72 and 1,408.66

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Solution

The fourth proportional to 5,791.20, 8,686.72 and 1,408.66 is: 2,112.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.20 : 8,686.72 = 1,408.66 : x
  2. Step 2: Convert to fraction form
    5,791.20/8,686.72 = 1,408.66/x
  3. Step 3: Cross multiply
    5,791.20x = 8,686.72 × 1,408.66
  4. Step 4: Simplify right side
    5,791.20x = 12,236,635.00
  5. Step 5: Solve for x
    x = 12,236,635.00/5,791.20
  6. Step 6: Final answer
    x = 2,112.97

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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.