Home / 1,918.96-2,647.97-1,079.64

Finding the Fourth Proportional to 1,918.96, 2,647.97 and 1,079.64

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Solution

The fourth proportional to 1,918.96, 2,647.97 and 1,079.64 is: 1,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.96 : 2,647.97 = 1,079.64 : x
  2. Step 2: Convert to fraction form
    1,918.96/2,647.97 = 1,079.64/x
  3. Step 3: Cross multiply
    1,918.96x = 2,647.97 × 1,079.64
  4. Step 4: Simplify right side
    1,918.96x = 2,858,857.03
  5. Step 5: Solve for x
    x = 2,858,857.03/1,918.96
  6. Step 6: Final answer
    x = 1,489.80

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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.