Home / 2,822.36-3,895.65-1,643.81

Finding the Fourth Proportional to 2,822.36, 3,895.65 and 1,643.81

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Solution

The fourth proportional to 2,822.36, 3,895.65 and 1,643.81 is: 2,268.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.36 : 3,895.65 = 1,643.81 : x
  2. Step 2: Convert to fraction form
    2,822.36/3,895.65 = 1,643.81/x
  3. Step 3: Cross multiply
    2,822.36x = 3,895.65 × 1,643.81
  4. Step 4: Simplify right side
    2,822.36x = 6,403,688.95
  5. Step 5: Solve for x
    x = 6,403,688.95/2,822.36
  6. Step 6: Final answer
    x = 2,268.92

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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.