Home / 3,178.08-4,762.78-2,021.76

Finding the Fourth Proportional to 3,178.08, 4,762.78 and 2,021.76

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Solution

The fourth proportional to 3,178.08, 4,762.78 and 2,021.76 is: 3,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.08 : 4,762.78 = 2,021.76 : x
  2. Step 2: Convert to fraction form
    3,178.08/4,762.78 = 2,021.76/x
  3. Step 3: Cross multiply
    3,178.08x = 4,762.78 × 2,021.76
  4. Step 4: Simplify right side
    3,178.08x = 9,629,198.09
  5. Step 5: Solve for x
    x = 9,629,198.09/3,178.08
  6. Step 6: Final answer
    x = 3,029.88

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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.