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Finding the Fourth Proportional to 1,786.80, 2,682.08 and 1,007.48

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Solution

The fourth proportional to 1,786.80, 2,682.08 and 1,007.48 is: 1,512.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.80 : 2,682.08 = 1,007.48 : x
  2. Step 2: Convert to fraction form
    1,786.80/2,682.08 = 1,007.48/x
  3. Step 3: Cross multiply
    1,786.80x = 2,682.08 × 1,007.48
  4. Step 4: Simplify right side
    1,786.80x = 2,702,147.40
  5. Step 5: Solve for x
    x = 2,702,147.40/1,786.80
  6. Step 6: Final answer
    x = 1,512.28

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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.