Home / 2,839.80-3,919.44-1,660.80

Finding the Fourth Proportional to 2,839.80, 3,919.44 and 1,660.80

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Solution

The fourth proportional to 2,839.80, 3,919.44 and 1,660.80 is: 2,292.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.80 : 3,919.44 = 1,660.80 : x
  2. Step 2: Convert to fraction form
    2,839.80/3,919.44 = 1,660.80/x
  3. Step 3: Cross multiply
    2,839.80x = 3,919.44 × 1,660.80
  4. Step 4: Simplify right side
    2,839.80x = 6,509,405.95
  5. Step 5: Solve for x
    x = 6,509,405.95/2,839.80
  6. Step 6: Final answer
    x = 2,292.21

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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.