Home / 3,413.30-4,709.79-1,921.28

Finding the Fourth Proportional to 3,413.30, 4,709.79 and 1,921.28

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Solution

The fourth proportional to 3,413.30, 4,709.79 and 1,921.28 is: 2,651.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.30 : 4,709.79 = 1,921.28 : x
  2. Step 2: Convert to fraction form
    3,413.30/4,709.79 = 1,921.28/x
  3. Step 3: Cross multiply
    3,413.30x = 4,709.79 × 1,921.28
  4. Step 4: Simplify right side
    3,413.30x = 9,048,801.78
  5. Step 5: Solve for x
    x = 9,048,801.78/3,413.30
  6. Step 6: Final answer
    x = 2,651.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.