Home / 2,758.08-3,806.46-1,918.56

Finding the Fourth Proportional to 2,758.08, 3,806.46 and 1,918.56

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Solution

The fourth proportional to 2,758.08, 3,806.46 and 1,918.56 is: 2,647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.08 : 3,806.46 = 1,918.56 : x
  2. Step 2: Convert to fraction form
    2,758.08/3,806.46 = 1,918.56/x
  3. Step 3: Cross multiply
    2,758.08x = 3,806.46 × 1,918.56
  4. Step 4: Simplify right side
    2,758.08x = 7,302,921.90
  5. Step 5: Solve for x
    x = 7,302,921.90/2,758.08
  6. Step 6: Final answer
    x = 2,647.83

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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.