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Finding the Fourth Proportional to 2,603.07, 3,906.18 and 960.80

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Solution

The fourth proportional to 2,603.07, 3,906.18 and 960.80 is: 1,441.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.07 : 3,906.18 = 960.80 : x
  2. Step 2: Convert to fraction form
    2,603.07/3,906.18 = 960.80/x
  3. Step 3: Cross multiply
    2,603.07x = 3,906.18 × 960.80
  4. Step 4: Simplify right side
    2,603.07x = 3,753,038.21
  5. Step 5: Solve for x
    x = 3,753,038.21/2,603.07
  6. Step 6: Final answer
    x = 1,441.77

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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.