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Finding the Fourth Proportional to 1,481.76, 2,039.85 and 1,294.65

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Solution

The fourth proportional to 1,481.76, 2,039.85 and 1,294.65 is: 1,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.76 : 2,039.85 = 1,294.65 : x
  2. Step 2: Convert to fraction form
    1,481.76/2,039.85 = 1,294.65/x
  3. Step 3: Cross multiply
    1,481.76x = 2,039.85 × 1,294.65
  4. Step 4: Simplify right side
    1,481.76x = 2,640,891.80
  5. Step 5: Solve for x
    x = 2,640,891.80/1,481.76
  6. Step 6: Final answer
    x = 1,782.27

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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.