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Finding the Fourth Proportional to 3,911.81, 5,866.09 and 1,448.60

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Solution

The fourth proportional to 3,911.81, 5,866.09 and 1,448.60 is: 2,172.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.81 : 5,866.09 = 1,448.60 : x
  2. Step 2: Convert to fraction form
    3,911.81/5,866.09 = 1,448.60/x
  3. Step 3: Cross multiply
    3,911.81x = 5,866.09 × 1,448.60
  4. Step 4: Simplify right side
    3,911.81x = 8,497,585.02
  5. Step 5: Solve for x
    x = 8,497,585.02/3,911.81
  6. Step 6: Final answer
    x = 2,172.29

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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.