Home / 2,852.85-3,936.90-2,012.68

Finding the Fourth Proportional to 2,852.85, 3,936.90 and 2,012.68

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Solution

The fourth proportional to 2,852.85, 3,936.90 and 2,012.68 is: 2,777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.85 : 3,936.90 = 2,012.68 : x
  2. Step 2: Convert to fraction form
    2,852.85/3,936.90 = 2,012.68/x
  3. Step 3: Cross multiply
    2,852.85x = 3,936.90 × 2,012.68
  4. Step 4: Simplify right side
    2,852.85x = 7,923,719.89
  5. Step 5: Solve for x
    x = 7,923,719.89/2,852.85
  6. Step 6: Final answer
    x = 2,777.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.