Home / 9,135.57-13,704.73-3,290.81

Finding the Fourth Proportional to 9,135.57, 13,704.73 and 3,290.81

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Solution

The fourth proportional to 9,135.57, 13,704.73 and 3,290.81 is: 4,936.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.57 : 13,704.73 = 3,290.81 : x
  2. Step 2: Convert to fraction form
    9,135.57/13,704.73 = 3,290.81/x
  3. Step 3: Cross multiply
    9,135.57x = 13,704.73 × 3,290.81
  4. Step 4: Simplify right side
    9,135.57x = 45,099,662.53
  5. Step 5: Solve for x
    x = 45,099,662.53/9,135.57
  6. Step 6: Final answer
    x = 4,936.71

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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.