Home / 2,661.35-3,992.63-1,275.03

Finding the Fourth Proportional to 2,661.35, 3,992.63 and 1,275.03

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Solution

The fourth proportional to 2,661.35, 3,992.63 and 1,275.03 is: 1,912.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.35 : 3,992.63 = 1,275.03 : x
  2. Step 2: Convert to fraction form
    2,661.35/3,992.63 = 1,275.03/x
  3. Step 3: Cross multiply
    2,661.35x = 3,992.63 × 1,275.03
  4. Step 4: Simplify right side
    2,661.35x = 5,090,716.65
  5. Step 5: Solve for x
    x = 5,090,716.65/2,661.35
  6. Step 6: Final answer
    x = 1,912.84

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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.