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Finding the Fourth Proportional to 2,942.75, 4,413.74 and 751.34

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Solution

The fourth proportional to 2,942.75, 4,413.74 and 751.34 is: 1,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.75 : 4,413.74 = 751.34 : x
  2. Step 2: Convert to fraction form
    2,942.75/4,413.74 = 751.34/x
  3. Step 3: Cross multiply
    2,942.75x = 4,413.74 × 751.34
  4. Step 4: Simplify right side
    2,942.75x = 3,316,193.59
  5. Step 5: Solve for x
    x = 3,316,193.59/2,942.75
  6. Step 6: Final answer
    x = 1,126.90

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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.