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Finding the Fourth Proportional to 3,823.36, 5,736 and 1,876.48

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Solution

The fourth proportional to 3,823.36, 5,736 and 1,876.48 is: 2,815.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,823.36 : 5,736 = 1,876.48 : x
  2. Step 2: Convert to fraction form
    3,823.36/5,736 = 1,876.48/x
  3. Step 3: Cross multiply
    3,823.36x = 5,736 × 1,876.48
  4. Step 4: Simplify right side
    3,823.36x = 10,763,489.28
  5. Step 5: Solve for x
    x = 10,763,489.28/3,823.36
  6. Step 6: Final answer
    x = 2,815.19

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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.