Home / 5,198.19-7,173.62-2,840.49

Finding the Fourth Proportional to 5,198.19, 7,173.62 and 2,840.49

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Solution

The fourth proportional to 5,198.19, 7,173.62 and 2,840.49 is: 3,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.19 : 7,173.62 = 2,840.49 : x
  2. Step 2: Convert to fraction form
    5,198.19/7,173.62 = 2,840.49/x
  3. Step 3: Cross multiply
    5,198.19x = 7,173.62 × 2,840.49
  4. Step 4: Simplify right side
    5,198.19x = 20,376,581.67
  5. Step 5: Solve for x
    x = 20,376,581.67/5,198.19
  6. Step 6: Final answer
    x = 3,919.94

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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.