Home / 2,281.16-3,147.86-1,286.48

Finding the Fourth Proportional to 2,281.16, 3,147.86 and 1,286.48

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Solution

The fourth proportional to 2,281.16, 3,147.86 and 1,286.48 is: 1,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.16 : 3,147.86 = 1,286.48 : x
  2. Step 2: Convert to fraction form
    2,281.16/3,147.86 = 1,286.48/x
  3. Step 3: Cross multiply
    2,281.16x = 3,147.86 × 1,286.48
  4. Step 4: Simplify right side
    2,281.16x = 4,049,658.93
  5. Step 5: Solve for x
    x = 4,049,658.93/2,281.16
  6. Step 6: Final answer
    x = 1,775.26

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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.