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Finding the Fourth Proportional to 2,600.43, 3,900.60 and 652.56

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Solution

The fourth proportional to 2,600.43, 3,900.60 and 652.56 is: 978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.43 : 3,900.60 = 652.56 : x
  2. Step 2: Convert to fraction form
    2,600.43/3,900.60 = 652.56/x
  3. Step 3: Cross multiply
    2,600.43x = 3,900.60 × 652.56
  4. Step 4: Simplify right side
    2,600.43x = 2,545,375.54
  5. Step 5: Solve for x
    x = 2,545,375.54/2,600.43
  6. Step 6: Final answer
    x = 978.83

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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.