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Finding the Fourth Proportional to 1,571, 2,168.04 and 872.48

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Solution

The fourth proportional to 1,571, 2,168.04 and 872.48 is: 1,204.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571 : 2,168.04 = 872.48 : x
  2. Step 2: Convert to fraction form
    1,571/2,168.04 = 872.48/x
  3. Step 3: Cross multiply
    1,571x = 2,168.04 × 872.48
  4. Step 4: Simplify right side
    1,571x = 1,891,571.54
  5. Step 5: Solve for x
    x = 1,891,571.54/1,571
  6. Step 6: Final answer
    x = 1,204.06

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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.