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Finding the Fourth Proportional to 1,866.81, 2,576.28 and 1,027.62

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Solution

The fourth proportional to 1,866.81, 2,576.28 and 1,027.62 is: 1,418.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.81 : 2,576.28 = 1,027.62 : x
  2. Step 2: Convert to fraction form
    1,866.81/2,576.28 = 1,027.62/x
  3. Step 3: Cross multiply
    1,866.81x = 2,576.28 × 1,027.62
  4. Step 4: Simplify right side
    1,866.81x = 2,647,436.85
  5. Step 5: Solve for x
    x = 2,647,436.85/1,866.81
  6. Step 6: Final answer
    x = 1,418.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.