Home / 2,822.76-3,895.83-1,643.81

Finding the Fourth Proportional to 2,822.76, 3,895.83 and 1,643.81

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Solution

The fourth proportional to 2,822.76, 3,895.83 and 1,643.81 is: 2,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.76 : 3,895.83 = 1,643.81 : x
  2. Step 2: Convert to fraction form
    2,822.76/3,895.83 = 1,643.81/x
  3. Step 3: Cross multiply
    2,822.76x = 3,895.83 × 1,643.81
  4. Step 4: Simplify right side
    2,822.76x = 6,403,984.83
  5. Step 5: Solve for x
    x = 6,403,984.83/2,822.76
  6. Step 6: Final answer
    x = 2,268.70

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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.