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Finding the Fourth Proportional to 1,676.63, 2,512.59 and 1,428.54

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Solution

The fourth proportional to 1,676.63, 2,512.59 and 1,428.54 is: 2,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.63 : 2,512.59 = 1,428.54 : x
  2. Step 2: Convert to fraction form
    1,676.63/2,512.59 = 1,428.54/x
  3. Step 3: Cross multiply
    1,676.63x = 2,512.59 × 1,428.54
  4. Step 4: Simplify right side
    1,676.63x = 3,589,320.54
  5. Step 5: Solve for x
    x = 3,589,320.54/1,676.63
  6. Step 6: Final answer
    x = 2,140.79

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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.