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Finding the Fourth Proportional to 5,270.75, 7,906.93 and 1,984.07

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Solution

The fourth proportional to 5,270.75, 7,906.93 and 1,984.07 is: 2,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.75 : 7,906.93 = 1,984.07 : x
  2. Step 2: Convert to fraction form
    5,270.75/7,906.93 = 1,984.07/x
  3. Step 3: Cross multiply
    5,270.75x = 7,906.93 × 1,984.07
  4. Step 4: Simplify right side
    5,270.75x = 15,687,902.61
  5. Step 5: Solve for x
    x = 15,687,902.61/5,270.75
  6. Step 6: Final answer
    x = 2,976.41

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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.