Home / 2,280.95-3,147.75-1,286.27

Finding the Fourth Proportional to 2,280.95, 3,147.75 and 1,286.27

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Solution

The fourth proportional to 2,280.95, 3,147.75 and 1,286.27 is: 1,775.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.95 : 3,147.75 = 1,286.27 : x
  2. Step 2: Convert to fraction form
    2,280.95/3,147.75 = 1,286.27/x
  3. Step 3: Cross multiply
    2,280.95x = 3,147.75 × 1,286.27
  4. Step 4: Simplify right side
    2,280.95x = 4,048,840.65
  5. Step 5: Solve for x
    x = 4,048,840.65/2,280.95
  6. Step 6: Final answer
    x = 1,775.07

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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.