Home / 3,299.12-4,949.36-1,107.79

Finding the Fourth Proportional to 3,299.12, 4,949.36 and 1,107.79

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Solution

The fourth proportional to 3,299.12, 4,949.36 and 1,107.79 is: 1,661.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,299.12 : 4,949.36 = 1,107.79 : x
  2. Step 2: Convert to fraction form
    3,299.12/4,949.36 = 1,107.79/x
  3. Step 3: Cross multiply
    3,299.12x = 4,949.36 × 1,107.79
  4. Step 4: Simplify right side
    3,299.12x = 5,482,851.51
  5. Step 5: Solve for x
    x = 5,482,851.51/3,299.12
  6. Step 6: Final answer
    x = 1,661.91

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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.