Home / 2,334.38-3,221.44-1,286.51

Finding the Fourth Proportional to 2,334.38, 3,221.44 and 1,286.51

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Solution

The fourth proportional to 2,334.38, 3,221.44 and 1,286.51 is: 1,775.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.38 : 3,221.44 = 1,286.51 : x
  2. Step 2: Convert to fraction form
    2,334.38/3,221.44 = 1,286.51/x
  3. Step 3: Cross multiply
    2,334.38x = 3,221.44 × 1,286.51
  4. Step 4: Simplify right side
    2,334.38x = 4,144,395.45
  5. Step 5: Solve for x
    x = 4,144,395.45/2,334.38
  6. Step 6: Final answer
    x = 1,775.38

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Half scale
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Double scale
Find fourth proportional to 2,335.38, 3,222.82 and 1,287.51
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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.