Home / 5,198.40-7,173.84-3,102.72

Finding the Fourth Proportional to 5,198.40, 7,173.84 and 3,102.72

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Solution

The fourth proportional to 5,198.40, 7,173.84 and 3,102.72 is: 4,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.40 : 7,173.84 = 3,102.72 : x
  2. Step 2: Convert to fraction form
    5,198.40/7,173.84 = 3,102.72/x
  3. Step 3: Cross multiply
    5,198.40x = 7,173.84 × 3,102.72
  4. Step 4: Simplify right side
    5,198.40x = 22,258,416.84
  5. Step 5: Solve for x
    x = 22,258,416.84/5,198.40
  6. Step 6: Final answer
    x = 4,281.78

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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.