Home / 2,072.26-2,859.32-1,286.50

Finding the Fourth Proportional to 2,072.26, 2,859.32 and 1,286.50

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Solution

The fourth proportional to 2,072.26, 2,859.32 and 1,286.50 is: 1,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.26 : 2,859.32 = 1,286.50 : x
  2. Step 2: Convert to fraction form
    2,072.26/2,859.32 = 1,286.50/x
  3. Step 3: Cross multiply
    2,072.26x = 2,859.32 × 1,286.50
  4. Step 4: Simplify right side
    2,072.26x = 3,678,515.18
  5. Step 5: Solve for x
    x = 3,678,515.18/2,072.26
  6. Step 6: Final answer
    x = 1,775.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.