Home / 2,760.36-4,142.09-2,145.30

Finding the Fourth Proportional to 2,760.36, 4,142.09 and 2,145.30

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Solution

The fourth proportional to 2,760.36, 4,142.09 and 2,145.30 is: 3,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.36 : 4,142.09 = 2,145.30 : x
  2. Step 2: Convert to fraction form
    2,760.36/4,142.09 = 2,145.30/x
  3. Step 3: Cross multiply
    2,760.36x = 4,142.09 × 2,145.30
  4. Step 4: Simplify right side
    2,760.36x = 8,886,025.68
  5. Step 5: Solve for x
    x = 8,886,025.68/2,760.36
  6. Step 6: Final answer
    x = 3,219.15

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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.