Home / 3,907.13-5,390.25-2,490.44

Finding the Fourth Proportional to 3,907.13, 5,390.25 and 2,490.44

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Solution

The fourth proportional to 3,907.13, 5,390.25 and 2,490.44 is: 3,435.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.13 : 5,390.25 = 2,490.44 : x
  2. Step 2: Convert to fraction form
    3,907.13/5,390.25 = 2,490.44/x
  3. Step 3: Cross multiply
    3,907.13x = 5,390.25 × 2,490.44
  4. Step 4: Simplify right side
    3,907.13x = 13,424,067.26
  5. Step 5: Solve for x
    x = 13,424,067.26/3,907.13
  6. Step 6: Final answer
    x = 3,435.79

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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.