Home / 2,940.62-4,428.54-2,678.18

Finding the Fourth Proportional to 2,940.62, 4,428.54 and 2,678.18

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Solution

The fourth proportional to 2,940.62, 4,428.54 and 2,678.18 is: 4,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.62 : 4,428.54 = 2,678.18 : x
  2. Step 2: Convert to fraction form
    2,940.62/4,428.54 = 2,678.18/x
  3. Step 3: Cross multiply
    2,940.62x = 4,428.54 × 2,678.18
  4. Step 4: Simplify right side
    2,940.62x = 11,860,413.87
  5. Step 5: Solve for x
    x = 11,860,413.87/2,940.62
  6. Step 6: Final answer
    x = 4,033.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.