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Finding the Fourth Proportional to 2,893.12, 4,333.92 and 1,864

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Solution

The fourth proportional to 2,893.12, 4,333.92 and 1,864 is: 2,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,893.12 : 4,333.92 = 1,864 : x
  2. Step 2: Convert to fraction form
    2,893.12/4,333.92 = 1,864/x
  3. Step 3: Cross multiply
    2,893.12x = 4,333.92 × 1,864
  4. Step 4: Simplify right side
    2,893.12x = 8,078,426.88
  5. Step 5: Solve for x
    x = 8,078,426.88/2,893.12
  6. Step 6: Final answer
    x = 2,792.29

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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.