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Finding the Fourth Proportional to 1,640.76, 2,463.30 and 1,351.32

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Solution

The fourth proportional to 1,640.76, 2,463.30 and 1,351.32 is: 2,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.76 : 2,463.30 = 1,351.32 : x
  2. Step 2: Convert to fraction form
    1,640.76/2,463.30 = 1,351.32/x
  3. Step 3: Cross multiply
    1,640.76x = 2,463.30 × 1,351.32
  4. Step 4: Simplify right side
    1,640.76x = 3,328,706.56
  5. Step 5: Solve for x
    x = 3,328,706.56/1,640.76
  6. Step 6: Final answer
    x = 2,028.76

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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.