Home / 1,990.08-2,987.43-1,067.44

Finding the Fourth Proportional to 1,990.08, 2,987.43 and 1,067.44

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Solution

The fourth proportional to 1,990.08, 2,987.43 and 1,067.44 is: 1,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.08 : 2,987.43 = 1,067.44 : x
  2. Step 2: Convert to fraction form
    1,990.08/2,987.43 = 1,067.44/x
  3. Step 3: Cross multiply
    1,990.08x = 2,987.43 × 1,067.44
  4. Step 4: Simplify right side
    1,990.08x = 3,188,896.41
  5. Step 5: Solve for x
    x = 3,188,896.41/1,990.08
  6. Step 6: Final answer
    x = 1,602.40

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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.