Home / 5,418.90-7,477.65-3,180.60

Finding the Fourth Proportional to 5,418.90, 7,477.65 and 3,180.60

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Solution

The fourth proportional to 5,418.90, 7,477.65 and 3,180.60 is: 4,388.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.90 : 7,477.65 = 3,180.60 : x
  2. Step 2: Convert to fraction form
    5,418.90/7,477.65 = 3,180.60/x
  3. Step 3: Cross multiply
    5,418.90x = 7,477.65 × 3,180.60
  4. Step 4: Simplify right side
    5,418.90x = 23,783,413.59
  5. Step 5: Solve for x
    x = 23,783,413.59/5,418.90
  6. Step 6: Final answer
    x = 4,388.97

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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.