Home / 2,822.21-3,893.76-1,643.06

Finding the Fourth Proportional to 2,822.21, 3,893.76 and 1,643.06

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Solution

The fourth proportional to 2,822.21, 3,893.76 and 1,643.06 is: 2,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.21 : 3,893.76 = 1,643.06 : x
  2. Step 2: Convert to fraction form
    2,822.21/3,893.76 = 1,643.06/x
  3. Step 3: Cross multiply
    2,822.21x = 3,893.76 × 1,643.06
  4. Step 4: Simplify right side
    2,822.21x = 6,397,661.84
  5. Step 5: Solve for x
    x = 6,397,661.84/2,822.21
  6. Step 6: Final answer
    x = 2,266.90

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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.