Home / 2,821.15-3,893.43-1,642.33

Finding the Fourth Proportional to 2,821.15, 3,893.43 and 1,642.33

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Solution

The fourth proportional to 2,821.15, 3,893.43 and 1,642.33 is: 2,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.15 : 3,893.43 = 1,642.33 : x
  2. Step 2: Convert to fraction form
    2,821.15/3,893.43 = 1,642.33/x
  3. Step 3: Cross multiply
    2,821.15x = 3,893.43 × 1,642.33
  4. Step 4: Simplify right side
    2,821.15x = 6,394,296.89
  5. Step 5: Solve for x
    x = 6,394,296.89/2,821.15
  6. Step 6: Final answer
    x = 2,266.56

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1.5x scale

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.