Home / 2,853.49-3,936.73-1,790.80

Finding the Fourth Proportional to 2,853.49, 3,936.73 and 1,790.80

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Solution

The fourth proportional to 2,853.49, 3,936.73 and 1,790.80 is: 2,470.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.49 : 3,936.73 = 1,790.80 : x
  2. Step 2: Convert to fraction form
    2,853.49/3,936.73 = 1,790.80/x
  3. Step 3: Cross multiply
    2,853.49x = 3,936.73 × 1,790.80
  4. Step 4: Simplify right side
    2,853.49x = 7,049,896.08
  5. Step 5: Solve for x
    x = 7,049,896.08/2,853.49
  6. Step 6: Final answer
    x = 2,470.62

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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.