Home / 2,821.37-3,893.27-1,642.55

Finding the Fourth Proportional to 2,821.37, 3,893.27 and 1,642.55

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Solution

The fourth proportional to 2,821.37, 3,893.27 and 1,642.55 is: 2,266.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.37 : 3,893.27 = 1,642.55 : x
  2. Step 2: Convert to fraction form
    2,821.37/3,893.27 = 1,642.55/x
  3. Step 3: Cross multiply
    2,821.37x = 3,893.27 × 1,642.55
  4. Step 4: Simplify right side
    2,821.37x = 6,394,862.96
  5. Step 5: Solve for x
    x = 6,394,862.96/2,821.37
  6. Step 6: Final answer
    x = 2,266.58

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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.