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Finding the Fourth Proportional to 3,783.69, 5,680.80 and 1,936.26

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Solution

The fourth proportional to 3,783.69, 5,680.80 and 1,936.26 is: 2,907.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.69 : 5,680.80 = 1,936.26 : x
  2. Step 2: Convert to fraction form
    3,783.69/5,680.80 = 1,936.26/x
  3. Step 3: Cross multiply
    3,783.69x = 5,680.80 × 1,936.26
  4. Step 4: Simplify right side
    3,783.69x = 10,999,505.81
  5. Step 5: Solve for x
    x = 10,999,505.81/3,783.69
  6. Step 6: Final answer
    x = 2,907.08

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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.