Home / 2,405.11-3,608.87-1,107.49

Finding the Fourth Proportional to 2,405.11, 3,608.87 and 1,107.49

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Solution

The fourth proportional to 2,405.11, 3,608.87 and 1,107.49 is: 1,661.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.11 : 3,608.87 = 1,107.49 : x
  2. Step 2: Convert to fraction form
    2,405.11/3,608.87 = 1,107.49/x
  3. Step 3: Cross multiply
    2,405.11x = 3,608.87 × 1,107.49
  4. Step 4: Simplify right side
    2,405.11x = 3,996,787.44
  5. Step 5: Solve for x
    x = 3,996,787.44/2,405.11
  6. Step 6: Final answer
    x = 1,661.79

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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.