Home / 2,185.07-3,278.97-1,145.90

Finding the Fourth Proportional to 2,185.07, 3,278.97 and 1,145.90

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Solution

The fourth proportional to 2,185.07, 3,278.97 and 1,145.90 is: 1,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.07 : 3,278.97 = 1,145.90 : x
  2. Step 2: Convert to fraction form
    2,185.07/3,278.97 = 1,145.90/x
  3. Step 3: Cross multiply
    2,185.07x = 3,278.97 × 1,145.90
  4. Step 4: Simplify right side
    2,185.07x = 3,757,379.92
  5. Step 5: Solve for x
    x = 3,757,379.92/2,185.07
  6. Step 6: Final answer
    x = 1,719.57

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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.