Home / 2,822.85-3,895.09-1,643.90

Finding the Fourth Proportional to 2,822.85, 3,895.09 and 1,643.90

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Solution

The fourth proportional to 2,822.85, 3,895.09 and 1,643.90 is: 2,268.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.85 : 3,895.09 = 1,643.90 : x
  2. Step 2: Convert to fraction form
    2,822.85/3,895.09 = 1,643.90/x
  3. Step 3: Cross multiply
    2,822.85x = 3,895.09 × 1,643.90
  4. Step 4: Simplify right side
    2,822.85x = 6,403,114.87
  5. Step 5: Solve for x
    x = 6,403,114.87/2,822.85
  6. Step 6: Final answer
    x = 2,268.32

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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.