Home / 3,979.04-5,485.38-2,796.44

Finding the Fourth Proportional to 3,979.04, 5,485.38 and 2,796.44

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Solution

The fourth proportional to 3,979.04, 5,485.38 and 2,796.44 is: 3,855.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.04 : 5,485.38 = 2,796.44 : x
  2. Step 2: Convert to fraction form
    3,979.04/5,485.38 = 2,796.44/x
  3. Step 3: Cross multiply
    3,979.04x = 5,485.38 × 2,796.44
  4. Step 4: Simplify right side
    3,979.04x = 15,339,539.27
  5. Step 5: Solve for x
    x = 15,339,539.27/3,979.04
  6. Step 6: Final answer
    x = 3,855.08

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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.