Home / 2,845.22-3,928.20-2,180.84

Finding the Fourth Proportional to 2,845.22, 3,928.20 and 2,180.84

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Solution

The fourth proportional to 2,845.22, 3,928.20 and 2,180.84 is: 3,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.22 : 3,928.20 = 2,180.84 : x
  2. Step 2: Convert to fraction form
    2,845.22/3,928.20 = 2,180.84/x
  3. Step 3: Cross multiply
    2,845.22x = 3,928.20 × 2,180.84
  4. Step 4: Simplify right side
    2,845.22x = 8,566,775.69
  5. Step 5: Solve for x
    x = 8,566,775.69/2,845.22
  6. Step 6: Final answer
    x = 3,010.94

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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.