Home / 3,921.93-5,413.21-2,428.94

Finding the Fourth Proportional to 3,921.93, 5,413.21 and 2,428.94

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Solution

The fourth proportional to 3,921.93, 5,413.21 and 2,428.94 is: 3,352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.93 : 5,413.21 = 2,428.94 : x
  2. Step 2: Convert to fraction form
    3,921.93/5,413.21 = 2,428.94/x
  3. Step 3: Cross multiply
    3,921.93x = 5,413.21 × 2,428.94
  4. Step 4: Simplify right side
    3,921.93x = 13,148,369.76
  5. Step 5: Solve for x
    x = 13,148,369.76/3,921.93
  6. Step 6: Final answer
    x = 3,352.53

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1.5x scale

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.