Home / 9,105.09-13,662.95-3,839.78

Finding the Fourth Proportional to 9,105.09, 13,662.95 and 3,839.78

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Solution

The fourth proportional to 9,105.09, 13,662.95 and 3,839.78 is: 5,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,105.09 : 13,662.95 = 3,839.78 : x
  2. Step 2: Convert to fraction form
    9,105.09/13,662.95 = 3,839.78/x
  3. Step 3: Cross multiply
    9,105.09x = 13,662.95 × 3,839.78
  4. Step 4: Simplify right side
    9,105.09x = 52,462,634.64
  5. Step 5: Solve for x
    x = 52,462,634.64/9,105.09
  6. Step 6: Final answer
    x = 5,761.90

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1.5x scale

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.