Home / 1,413.75-2,115.11-949.32

Finding the Fourth Proportional to 1,413.75, 2,115.11 and 949.32

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Solution

The fourth proportional to 1,413.75, 2,115.11 and 949.32 is: 1,420.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.75 : 2,115.11 = 949.32 : x
  2. Step 2: Convert to fraction form
    1,413.75/2,115.11 = 949.32/x
  3. Step 3: Cross multiply
    1,413.75x = 2,115.11 × 949.32
  4. Step 4: Simplify right side
    1,413.75x = 2,007,918.60
  5. Step 5: Solve for x
    x = 2,007,918.60/1,413.75
  6. Step 6: Final answer
    x = 1,420.27

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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.