Home / 2,718.44-4,078.38-986.12

Finding the Fourth Proportional to 2,718.44, 4,078.38 and 986.12

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Solution

The fourth proportional to 2,718.44, 4,078.38 and 986.12 is: 1,479.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.44 : 4,078.38 = 986.12 : x
  2. Step 2: Convert to fraction form
    2,718.44/4,078.38 = 986.12/x
  3. Step 3: Cross multiply
    2,718.44x = 4,078.38 × 986.12
  4. Step 4: Simplify right side
    2,718.44x = 4,021,772.09
  5. Step 5: Solve for x
    x = 4,021,772.09/2,718.44
  6. Step 6: Final answer
    x = 1,479.44

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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.