Home / 5,198.16-7,173.54-2,840.40

Finding the Fourth Proportional to 5,198.16, 7,173.54 and 2,840.40

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Solution

The fourth proportional to 5,198.16, 7,173.54 and 2,840.40 is: 3,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.16 : 7,173.54 = 2,840.40 : x
  2. Step 2: Convert to fraction form
    5,198.16/7,173.54 = 2,840.40/x
  3. Step 3: Cross multiply
    5,198.16x = 7,173.54 × 2,840.40
  4. Step 4: Simplify right side
    5,198.16x = 20,375,723.02
  5. Step 5: Solve for x
    x = 20,375,723.02/5,198.16
  6. Step 6: Final answer
    x = 3,919.80

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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.