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Finding the Fourth Proportional to 1,414.06, 2,121.39 and 682.63

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Solution

The fourth proportional to 1,414.06, 2,121.39 and 682.63 is: 1,024.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.06 : 2,121.39 = 682.63 : x
  2. Step 2: Convert to fraction form
    1,414.06/2,121.39 = 682.63/x
  3. Step 3: Cross multiply
    1,414.06x = 2,121.39 × 682.63
  4. Step 4: Simplify right side
    1,414.06x = 1,448,119.15
  5. Step 5: Solve for x
    x = 1,448,119.15/1,414.06
  6. Step 6: Final answer
    x = 1,024.09

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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.