Home / 2,107.22-2,907.32-1,222.85

Finding the Fourth Proportional to 2,107.22, 2,907.32 and 1,222.85

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Solution

The fourth proportional to 2,107.22, 2,907.32 and 1,222.85 is: 1,687.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.22 : 2,907.32 = 1,222.85 : x
  2. Step 2: Convert to fraction form
    2,107.22/2,907.32 = 1,222.85/x
  3. Step 3: Cross multiply
    2,107.22x = 2,907.32 × 1,222.85
  4. Step 4: Simplify right side
    2,107.22x = 3,555,224.29
  5. Step 5: Solve for x
    x = 3,555,224.29/2,107.22
  6. Step 6: Final answer
    x = 1,687.16

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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.