Home / 3,145.06-4,716.78-1,413.28

Finding the Fourth Proportional to 3,145.06, 4,716.78 and 1,413.28

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Solution

The fourth proportional to 3,145.06, 4,716.78 and 1,413.28 is: 2,119.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.06 : 4,716.78 = 1,413.28 : x
  2. Step 2: Convert to fraction form
    3,145.06/4,716.78 = 1,413.28/x
  3. Step 3: Cross multiply
    3,145.06x = 4,716.78 × 1,413.28
  4. Step 4: Simplify right side
    3,145.06x = 6,666,130.84
  5. Step 5: Solve for x
    x = 6,666,130.84/3,145.06
  6. Step 6: Final answer
    x = 2,119.56

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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.