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Finding the Fourth Proportional to 2,822.04, 3,894.89 and 1,643.81

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Solution

The fourth proportional to 2,822.04, 3,894.89 and 1,643.81 is: 2,268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.04 : 3,894.89 = 1,643.81 : x
  2. Step 2: Convert to fraction form
    2,822.04/3,894.89 = 1,643.81/x
  3. Step 3: Cross multiply
    2,822.04x = 3,894.89 × 1,643.81
  4. Step 4: Simplify right side
    2,822.04x = 6,402,459.13
  5. Step 5: Solve for x
    x = 6,402,459.13/2,822.04
  6. Step 6: Final answer
    x = 2,268.73

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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.