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Finding the Fourth Proportional to 2,873.79, 3,963.60 and 2,168.01

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Solution

The fourth proportional to 2,873.79, 3,963.60 and 2,168.01 is: 2,990.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.79 : 3,963.60 = 2,168.01 : x
  2. Step 2: Convert to fraction form
    2,873.79/3,963.60 = 2,168.01/x
  3. Step 3: Cross multiply
    2,873.79x = 3,963.60 × 2,168.01
  4. Step 4: Simplify right side
    2,873.79x = 8,593,124.44
  5. Step 5: Solve for x
    x = 8,593,124.44/2,873.79
  6. Step 6: Final answer
    x = 2,990.17

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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.