Home / 5,540.05-7,640.95-3,550.80

Finding the Fourth Proportional to 5,540.05, 7,640.95 and 3,550.80

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Solution

The fourth proportional to 5,540.05, 7,640.95 and 3,550.80 is: 4,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.05 : 7,640.95 = 3,550.80 : x
  2. Step 2: Convert to fraction form
    5,540.05/7,640.95 = 3,550.80/x
  3. Step 3: Cross multiply
    5,540.05x = 7,640.95 × 3,550.80
  4. Step 4: Simplify right side
    5,540.05x = 27,131,485.26
  5. Step 5: Solve for x
    x = 27,131,485.26/5,540.05
  6. Step 6: Final answer
    x = 4,897.34

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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.