Home / 3,979.29-5,969.12-1,206.36

Finding the Fourth Proportional to 3,979.29, 5,969.12 and 1,206.36

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Solution

The fourth proportional to 3,979.29, 5,969.12 and 1,206.36 is: 1,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.29 : 5,969.12 = 1,206.36 : x
  2. Step 2: Convert to fraction form
    3,979.29/5,969.12 = 1,206.36/x
  3. Step 3: Cross multiply
    3,979.29x = 5,969.12 × 1,206.36
  4. Step 4: Simplify right side
    3,979.29x = 7,200,907.60
  5. Step 5: Solve for x
    x = 7,200,907.60/3,979.29
  6. Step 6: Final answer
    x = 1,809.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.