Home / 2,135.85-3,197.99-1,107.69

Finding the Fourth Proportional to 2,135.85, 3,197.99 and 1,107.69

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Solution

The fourth proportional to 2,135.85, 3,197.99 and 1,107.69 is: 1,658.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.85 : 3,197.99 = 1,107.69 : x
  2. Step 2: Convert to fraction form
    2,135.85/3,197.99 = 1,107.69/x
  3. Step 3: Cross multiply
    2,135.85x = 3,197.99 × 1,107.69
  4. Step 4: Simplify right side
    2,135.85x = 3,542,376.00
  5. Step 5: Solve for x
    x = 3,542,376.00/2,135.85
  6. Step 6: Final answer
    x = 1,658.53

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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.