Home / 3,215.89-4,427.44-2,749.33

Finding the Fourth Proportional to 3,215.89, 4,427.44 and 2,749.33

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Solution

The fourth proportional to 3,215.89, 4,427.44 and 2,749.33 is: 3,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.89 : 4,427.44 = 2,749.33 : x
  2. Step 2: Convert to fraction form
    3,215.89/4,427.44 = 2,749.33/x
  3. Step 3: Cross multiply
    3,215.89x = 4,427.44 × 2,749.33
  4. Step 4: Simplify right side
    3,215.89x = 12,172,493.62
  5. Step 5: Solve for x
    x = 12,172,493.62/3,215.89
  6. Step 6: Final answer
    x = 3,785.11

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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.