Home / 3,540.88-4,886.67-1,969.21

Finding the Fourth Proportional to 3,540.88, 4,886.67 and 1,969.21

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Solution

The fourth proportional to 3,540.88, 4,886.67 and 1,969.21 is: 2,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.88 : 4,886.67 = 1,969.21 : x
  2. Step 2: Convert to fraction form
    3,540.88/4,886.67 = 1,969.21/x
  3. Step 3: Cross multiply
    3,540.88x = 4,886.67 × 1,969.21
  4. Step 4: Simplify right side
    3,540.88x = 9,622,879.43
  5. Step 5: Solve for x
    x = 9,622,879.43/3,540.88
  6. Step 6: Final answer
    x = 2,717.65

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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.