Home / 3,749.49-5,173.88-2,155.82

Finding the Fourth Proportional to 3,749.49, 5,173.88 and 2,155.82

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Solution

The fourth proportional to 3,749.49, 5,173.88 and 2,155.82 is: 2,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.49 : 5,173.88 = 2,155.82 : x
  2. Step 2: Convert to fraction form
    3,749.49/5,173.88 = 2,155.82/x
  3. Step 3: Cross multiply
    3,749.49x = 5,173.88 × 2,155.82
  4. Step 4: Simplify right side
    3,749.49x = 11,153,917.33
  5. Step 5: Solve for x
    x = 11,153,917.33/3,749.49
  6. Step 6: Final answer
    x = 2,974.78

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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.