Home / 1,918.49-2,647.44-1,132.79

Finding the Fourth Proportional to 1,918.49, 2,647.44 and 1,132.79

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Solution

The fourth proportional to 1,918.49, 2,647.44 and 1,132.79 is: 1,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.49 : 2,647.44 = 1,132.79 : x
  2. Step 2: Convert to fraction form
    1,918.49/2,647.44 = 1,132.79/x
  3. Step 3: Cross multiply
    1,918.49x = 2,647.44 × 1,132.79
  4. Step 4: Simplify right side
    1,918.49x = 2,998,993.56
  5. Step 5: Solve for x
    x = 2,998,993.56/1,918.49
  6. Step 6: Final answer
    x = 1,563.21

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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.