Home / 2,839.12-3,917.70-1,643.29

Finding the Fourth Proportional to 2,839.12, 3,917.70 and 1,643.29

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Solution

The fourth proportional to 2,839.12, 3,917.70 and 1,643.29 is: 2,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.12 : 3,917.70 = 1,643.29 : x
  2. Step 2: Convert to fraction form
    2,839.12/3,917.70 = 1,643.29/x
  3. Step 3: Cross multiply
    2,839.12x = 3,917.70 × 1,643.29
  4. Step 4: Simplify right side
    2,839.12x = 6,437,907.44
  5. Step 5: Solve for x
    x = 6,437,907.44/2,839.12
  6. Step 6: Final answer
    x = 2,267.57

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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.