Home / 3,907.05-5,391.81-2,205.42

Finding the Fourth Proportional to 3,907.05, 5,391.81 and 2,205.42

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Solution

The fourth proportional to 3,907.05, 5,391.81 and 2,205.42 is: 3,043.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.05 : 5,391.81 = 2,205.42 : x
  2. Step 2: Convert to fraction form
    3,907.05/5,391.81 = 2,205.42/x
  3. Step 3: Cross multiply
    3,907.05x = 5,391.81 × 2,205.42
  4. Step 4: Simplify right side
    3,907.05x = 11,891,205.61
  5. Step 5: Solve for x
    x = 11,891,205.61/3,907.05
  6. Step 6: Final answer
    x = 3,043.53

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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.