Home / 2,505.39-3,758.11-1,118.80

Finding the Fourth Proportional to 2,505.39, 3,758.11 and 1,118.80

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Solution

The fourth proportional to 2,505.39, 3,758.11 and 1,118.80 is: 1,678.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.39 : 3,758.11 = 1,118.80 : x
  2. Step 2: Convert to fraction form
    2,505.39/3,758.11 = 1,118.80/x
  3. Step 3: Cross multiply
    2,505.39x = 3,758.11 × 1,118.80
  4. Step 4: Simplify right side
    2,505.39x = 4,204,571.09
  5. Step 5: Solve for x
    x = 4,204,571.09/2,505.39
  6. Step 6: Final answer
    x = 1,678.21

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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.