Home / 2,280.92-3,147.88-1,286.28

Finding the Fourth Proportional to 2,280.92, 3,147.88 and 1,286.28

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Solution

The fourth proportional to 2,280.92, 3,147.88 and 1,286.28 is: 1,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.92 : 3,147.88 = 1,286.28 : x
  2. Step 2: Convert to fraction form
    2,280.92/3,147.88 = 1,286.28/x
  3. Step 3: Cross multiply
    2,280.92x = 3,147.88 × 1,286.28
  4. Step 4: Simplify right side
    2,280.92x = 4,049,055.09
  5. Step 5: Solve for x
    x = 4,049,055.09/2,280.92
  6. Step 6: Final answer
    x = 1,775.19

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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.