Home / 2,730.78-4,096.62-2,145.75

Finding the Fourth Proportional to 2,730.78, 4,096.62 and 2,145.75

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Solution

The fourth proportional to 2,730.78, 4,096.62 and 2,145.75 is: 3,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.78 : 4,096.62 = 2,145.75 : x
  2. Step 2: Convert to fraction form
    2,730.78/4,096.62 = 2,145.75/x
  3. Step 3: Cross multiply
    2,730.78x = 4,096.62 × 2,145.75
  4. Step 4: Simplify right side
    2,730.78x = 8,790,322.37
  5. Step 5: Solve for x
    x = 8,790,322.37/2,730.78
  6. Step 6: Final answer
    x = 3,218.98

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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.