Home / 2,811.33-3,880.49-1,632.69

Finding the Fourth Proportional to 2,811.33, 3,880.49 and 1,632.69

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Solution

The fourth proportional to 2,811.33, 3,880.49 and 1,632.69 is: 2,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.33 : 3,880.49 = 1,632.69 : x
  2. Step 2: Convert to fraction form
    2,811.33/3,880.49 = 1,632.69/x
  3. Step 3: Cross multiply
    2,811.33x = 3,880.49 × 1,632.69
  4. Step 4: Simplify right side
    2,811.33x = 6,335,629.05
  5. Step 5: Solve for x
    x = 6,335,629.05/2,811.33
  6. Step 6: Final answer
    x = 2,253.61

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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.