Home / 3,413.12-4,709.75-1,921.01

Finding the Fourth Proportional to 3,413.12, 4,709.75 and 1,921.01

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Solution

The fourth proportional to 3,413.12, 4,709.75 and 1,921.01 is: 2,650.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.12 : 4,709.75 = 1,921.01 : x
  2. Step 2: Convert to fraction form
    3,413.12/4,709.75 = 1,921.01/x
  3. Step 3: Cross multiply
    3,413.12x = 4,709.75 × 1,921.01
  4. Step 4: Simplify right side
    3,413.12x = 9,047,467.24
  5. Step 5: Solve for x
    x = 9,047,467.24/3,413.12
  6. Step 6: Final answer
    x = 2,650.79

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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.