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Finding the Fourth Proportional to 2,512.43, 3,768.80 and 868.76

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Solution

The fourth proportional to 2,512.43, 3,768.80 and 868.76 is: 1,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.43 : 3,768.80 = 868.76 : x
  2. Step 2: Convert to fraction form
    2,512.43/3,768.80 = 868.76/x
  3. Step 3: Cross multiply
    2,512.43x = 3,768.80 × 868.76
  4. Step 4: Simplify right side
    2,512.43x = 3,274,180.96
  5. Step 5: Solve for x
    x = 3,274,180.96/2,512.43
  6. Step 6: Final answer
    x = 1,303.20

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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.