Home / 2,721.60-4,081.52-1,680.03

Finding the Fourth Proportional to 2,721.60, 4,081.52 and 1,680.03

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Solution

The fourth proportional to 2,721.60, 4,081.52 and 1,680.03 is: 2,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.60 : 4,081.52 = 1,680.03 : x
  2. Step 2: Convert to fraction form
    2,721.60/4,081.52 = 1,680.03/x
  3. Step 3: Cross multiply
    2,721.60x = 4,081.52 × 1,680.03
  4. Step 4: Simplify right side
    2,721.60x = 6,857,067.65
  5. Step 5: Solve for x
    x = 6,857,067.65/2,721.60
  6. Step 6: Final answer
    x = 2,519.50

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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.