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Finding the Fourth Proportional to 2,866.39, 4,300.92 and 892.32

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Solution

The fourth proportional to 2,866.39, 4,300.92 and 892.32 is: 1,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.39 : 4,300.92 = 892.32 : x
  2. Step 2: Convert to fraction form
    2,866.39/4,300.92 = 892.32/x
  3. Step 3: Cross multiply
    2,866.39x = 4,300.92 × 892.32
  4. Step 4: Simplify right side
    2,866.39x = 3,837,796.93
  5. Step 5: Solve for x
    x = 3,837,796.93/2,866.39
  6. Step 6: Final answer
    x = 1,338.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.