Home / 3,413.56-5,120.10-1,948.12

Finding the Fourth Proportional to 3,413.56, 5,120.10 and 1,948.12

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Solution

The fourth proportional to 3,413.56, 5,120.10 and 1,948.12 is: 2,922.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.56 : 5,120.10 = 1,948.12 : x
  2. Step 2: Convert to fraction form
    3,413.56/5,120.10 = 1,948.12/x
  3. Step 3: Cross multiply
    3,413.56x = 5,120.10 × 1,948.12
  4. Step 4: Simplify right side
    3,413.56x = 9,974,569.21
  5. Step 5: Solve for x
    x = 9,974,569.21/3,413.56
  6. Step 6: Final answer
    x = 2,922.04

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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.