Home / 3,922.94-5,413.59-2,154.53

Finding the Fourth Proportional to 3,922.94, 5,413.59 and 2,154.53

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Solution

The fourth proportional to 3,922.94, 5,413.59 and 2,154.53 is: 2,973.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.94 : 5,413.59 = 2,154.53 : x
  2. Step 2: Convert to fraction form
    3,922.94/5,413.59 = 2,154.53/x
  3. Step 3: Cross multiply
    3,922.94x = 5,413.59 × 2,154.53
  4. Step 4: Simplify right side
    3,922.94x = 11,663,714.99
  5. Step 5: Solve for x
    x = 11,663,714.99/3,922.94
  6. Step 6: Final answer
    x = 2,973.21

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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.