Home / 2,405.05-3,604.20-1,912.30

Finding the Fourth Proportional to 2,405.05, 3,604.20 and 1,912.30

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Solution

The fourth proportional to 2,405.05, 3,604.20 and 1,912.30 is: 2,865.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.05 : 3,604.20 = 1,912.30 : x
  2. Step 2: Convert to fraction form
    2,405.05/3,604.20 = 1,912.30/x
  3. Step 3: Cross multiply
    2,405.05x = 3,604.20 × 1,912.30
  4. Step 4: Simplify right side
    2,405.05x = 6,892,311.66
  5. Step 5: Solve for x
    x = 6,892,311.66/2,405.05
  6. Step 6: Final answer
    x = 2,865.77

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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.