Home / 2,823.75-3,896.82-1,645.65

Finding the Fourth Proportional to 2,823.75, 3,896.82 and 1,645.65

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Solution

The fourth proportional to 2,823.75, 3,896.82 and 1,645.65 is: 2,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.75 : 3,896.82 = 1,645.65 : x
  2. Step 2: Convert to fraction form
    2,823.75/3,896.82 = 1,645.65/x
  3. Step 3: Cross multiply
    2,823.75x = 3,896.82 × 1,645.65
  4. Step 4: Simplify right side
    2,823.75x = 6,412,801.83
  5. Step 5: Solve for x
    x = 6,412,801.83/2,823.75
  6. Step 6: Final answer
    x = 2,271.02

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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.