Home / 1,918.94-2,647.25-1,122.30

Finding the Fourth Proportional to 1,918.94, 2,647.25 and 1,122.30

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Solution

The fourth proportional to 1,918.94, 2,647.25 and 1,122.30 is: 1,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.94 : 2,647.25 = 1,122.30 : x
  2. Step 2: Convert to fraction form
    1,918.94/2,647.25 = 1,122.30/x
  3. Step 3: Cross multiply
    1,918.94x = 2,647.25 × 1,122.30
  4. Step 4: Simplify right side
    1,918.94x = 2,971,003.06
  5. Step 5: Solve for x
    x = 2,971,003.06/1,918.94
  6. Step 6: Final answer
    x = 1,548.26

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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.