Home / 3,907.09-5,391.78-2,205.48

Finding the Fourth Proportional to 3,907.09, 5,391.78 and 2,205.48

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Solution

The fourth proportional to 3,907.09, 5,391.78 and 2,205.48 is: 3,043.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.09 : 5,391.78 = 2,205.48 : x
  2. Step 2: Convert to fraction form
    3,907.09/5,391.78 = 2,205.48/x
  3. Step 3: Cross multiply
    3,907.09x = 5,391.78 × 2,205.48
  4. Step 4: Simplify right side
    3,907.09x = 11,891,462.95
  5. Step 5: Solve for x
    x = 11,891,462.95/3,907.09
  6. Step 6: Final answer
    x = 3,043.56

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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.