Home / 2,286.38-3,155.00-1,291.65

Finding the Fourth Proportional to 2,286.38, 3,155.00 and 1,291.65

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Solution

The fourth proportional to 2,286.38, 3,155.00 and 1,291.65 is: 1,782.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.38 : 3,155.00 = 1,291.65 : x
  2. Step 2: Convert to fraction form
    2,286.38/3,155.00 = 1,291.65/x
  3. Step 3: Cross multiply
    2,286.38x = 3,155.00 × 1,291.65
  4. Step 4: Simplify right side
    2,286.38x = 4,075,144.73
  5. Step 5: Solve for x
    x = 4,075,144.73/2,286.38
  6. Step 6: Final answer
    x = 1,782.36

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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.