Home / 3,305.40-4,958.10-1,993.20

Finding the Fourth Proportional to 3,305.40, 4,958.10 and 1,993.20

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Solution

The fourth proportional to 3,305.40, 4,958.10 and 1,993.20 is: 2,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.40 : 4,958.10 = 1,993.20 : x
  2. Step 2: Convert to fraction form
    3,305.40/4,958.10 = 1,993.20/x
  3. Step 3: Cross multiply
    3,305.40x = 4,958.10 × 1,993.20
  4. Step 4: Simplify right side
    3,305.40x = 9,882,484.92
  5. Step 5: Solve for x
    x = 9,882,484.92/3,305.40
  6. Step 6: Final answer
    x = 2,989.80

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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.