Home / 3,119.45-4,650.80-2,768.85

Finding the Fourth Proportional to 3,119.45, 4,650.80 and 2,768.85

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Solution

The fourth proportional to 3,119.45, 4,650.80 and 2,768.85 is: 4,128.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.45 : 4,650.80 = 2,768.85 : x
  2. Step 2: Convert to fraction form
    3,119.45/4,650.80 = 2,768.85/x
  3. Step 3: Cross multiply
    3,119.45x = 4,650.80 × 2,768.85
  4. Step 4: Simplify right side
    3,119.45x = 12,877,369.31
  5. Step 5: Solve for x
    x = 12,877,369.31/3,119.45
  6. Step 6: Final answer
    x = 4,128.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.