Home / 3,979.58-5,967.78-1,205.28

Finding the Fourth Proportional to 3,979.58, 5,967.78 and 1,205.28

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Solution

The fourth proportional to 3,979.58, 5,967.78 and 1,205.28 is: 1,807.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.58 : 5,967.78 = 1,205.28 : x
  2. Step 2: Convert to fraction form
    3,979.58/5,967.78 = 1,205.28/x
  3. Step 3: Cross multiply
    3,979.58x = 5,967.78 × 1,205.28
  4. Step 4: Simplify right side
    3,979.58x = 7,192,841.36
  5. Step 5: Solve for x
    x = 7,192,841.36/3,979.58
  6. Step 6: Final answer
    x = 1,807.44

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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.