Home / 3,378.60-4,660.85-2,119.03

Finding the Fourth Proportional to 3,378.60, 4,660.85 and 2,119.03

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Solution

The fourth proportional to 3,378.60, 4,660.85 and 2,119.03 is: 2,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.60 : 4,660.85 = 2,119.03 : x
  2. Step 2: Convert to fraction form
    3,378.60/4,660.85 = 2,119.03/x
  3. Step 3: Cross multiply
    3,378.60x = 4,660.85 × 2,119.03
  4. Step 4: Simplify right side
    3,378.60x = 9,876,474.62
  5. Step 5: Solve for x
    x = 9,876,474.62/3,378.60
  6. Step 6: Final answer
    x = 2,923.24

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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.