Home / 2,845.85-3,928.82-1,966.38

Finding the Fourth Proportional to 2,845.85, 3,928.82 and 1,966.38

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Solution

The fourth proportional to 2,845.85, 3,928.82 and 1,966.38 is: 2,714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.85 : 3,928.82 = 1,966.38 : x
  2. Step 2: Convert to fraction form
    2,845.85/3,928.82 = 1,966.38/x
  3. Step 3: Cross multiply
    2,845.85x = 3,928.82 × 1,966.38
  4. Step 4: Simplify right side
    2,845.85x = 7,725,553.07
  5. Step 5: Solve for x
    x = 7,725,553.07/2,845.85
  6. Step 6: Final answer
    x = 2,714.67

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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.