Home / 2,281.07-3,147.81-1,286.33

Finding the Fourth Proportional to 2,281.07, 3,147.81 and 1,286.33

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Solution

The fourth proportional to 2,281.07, 3,147.81 and 1,286.33 is: 1,775.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.07 : 3,147.81 = 1,286.33 : x
  2. Step 2: Convert to fraction form
    2,281.07/3,147.81 = 1,286.33/x
  3. Step 3: Cross multiply
    2,281.07x = 3,147.81 × 1,286.33
  4. Step 4: Simplify right side
    2,281.07x = 4,049,122.44
  5. Step 5: Solve for x
    x = 4,049,122.44/2,281.07
  6. Step 6: Final answer
    x = 1,775.10

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1.5x scale

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.