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Finding the Fourth Proportional to 2,137.57, 3,206.26 and 676.53

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Solution

The fourth proportional to 2,137.57, 3,206.26 and 676.53 is: 1,014.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.57 : 3,206.26 = 676.53 : x
  2. Step 2: Convert to fraction form
    2,137.57/3,206.26 = 676.53/x
  3. Step 3: Cross multiply
    2,137.57x = 3,206.26 × 676.53
  4. Step 4: Simplify right side
    2,137.57x = 2,169,127.70
  5. Step 5: Solve for x
    x = 2,169,127.70/2,137.57
  6. Step 6: Final answer
    x = 1,014.76

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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.