Home / 2,181.19-3,009.94-1,236.92

Finding the Fourth Proportional to 2,181.19, 3,009.94 and 1,236.92

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Solution

The fourth proportional to 2,181.19, 3,009.94 and 1,236.92 is: 1,706.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.19 : 3,009.94 = 1,236.92 : x
  2. Step 2: Convert to fraction form
    2,181.19/3,009.94 = 1,236.92/x
  3. Step 3: Cross multiply
    2,181.19x = 3,009.94 × 1,236.92
  4. Step 4: Simplify right side
    2,181.19x = 3,723,054.98
  5. Step 5: Solve for x
    x = 3,723,054.98/2,181.19
  6. Step 6: Final answer
    x = 1,706.89

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Half scale
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Double scale
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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.