Home / 2,823.80-4,235.70-1,839.65

Finding the Fourth Proportional to 2,823.80, 4,235.70 and 1,839.65

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Solution

The fourth proportional to 2,823.80, 4,235.70 and 1,839.65 is: 2,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.80 : 4,235.70 = 1,839.65 : x
  2. Step 2: Convert to fraction form
    2,823.80/4,235.70 = 1,839.65/x
  3. Step 3: Cross multiply
    2,823.80x = 4,235.70 × 1,839.65
  4. Step 4: Simplify right side
    2,823.80x = 7,792,205.51
  5. Step 5: Solve for x
    x = 7,792,205.51/2,823.80
  6. Step 6: Final answer
    x = 2,759.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.