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Finding the Fourth Proportional to 2,864, 3,952.32 and 1,622.08

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Solution

The fourth proportional to 2,864, 3,952.32 and 1,622.08 is: 2,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864 : 3,952.32 = 1,622.08 : x
  2. Step 2: Convert to fraction form
    2,864/3,952.32 = 1,622.08/x
  3. Step 3: Cross multiply
    2,864x = 3,952.32 × 1,622.08
  4. Step 4: Simplify right side
    2,864x = 6,410,979.23
  5. Step 5: Solve for x
    x = 6,410,979.23/2,864
  6. Step 6: Final answer
    x = 2,238.47

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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.