Home / 5,216.50-7,198.69-2,979.68

Finding the Fourth Proportional to 5,216.50, 7,198.69 and 2,979.68

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Solution

The fourth proportional to 5,216.50, 7,198.69 and 2,979.68 is: 4,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.50 : 7,198.69 = 2,979.68 : x
  2. Step 2: Convert to fraction form
    5,216.50/7,198.69 = 2,979.68/x
  3. Step 3: Cross multiply
    5,216.50x = 7,198.69 × 2,979.68
  4. Step 4: Simplify right side
    5,216.50x = 21,449,792.62
  5. Step 5: Solve for x
    x = 21,449,792.62/5,216.50
  6. Step 6: Final answer
    x = 4,111.91

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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.