Home / 6,721.58-10,078.93-3,949.09

Finding the Fourth Proportional to 6,721.58, 10,078.93 and 3,949.09

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Solution

The fourth proportional to 6,721.58, 10,078.93 and 3,949.09 is: 5,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.58 : 10,078.93 = 3,949.09 : x
  2. Step 2: Convert to fraction form
    6,721.58/10,078.93 = 3,949.09/x
  3. Step 3: Cross multiply
    6,721.58x = 10,078.93 × 3,949.09
  4. Step 4: Simplify right side
    6,721.58x = 39,802,581.41
  5. Step 5: Solve for x
    x = 39,802,581.41/6,721.58
  6. Step 6: Final answer
    x = 5,921.61

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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.