Home / 3,413.90-5,119.40-1,438.25

Finding the Fourth Proportional to 3,413.90, 5,119.40 and 1,438.25

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Solution

The fourth proportional to 3,413.90, 5,119.40 and 1,438.25 is: 2,156.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.90 : 5,119.40 = 1,438.25 : x
  2. Step 2: Convert to fraction form
    3,413.90/5,119.40 = 1,438.25/x
  3. Step 3: Cross multiply
    3,413.90x = 5,119.40 × 1,438.25
  4. Step 4: Simplify right side
    3,413.90x = 7,362,955.05
  5. Step 5: Solve for x
    x = 7,362,955.05/3,413.90
  6. Step 6: Final answer
    x = 2,156.76

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1.5x scale

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.