Home / 2,181.05-3,009.13-1,236.73

Finding the Fourth Proportional to 2,181.05, 3,009.13 and 1,236.73

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Solution

The fourth proportional to 2,181.05, 3,009.13 and 1,236.73 is: 1,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.05 : 3,009.13 = 1,236.73 : x
  2. Step 2: Convert to fraction form
    2,181.05/3,009.13 = 1,236.73/x
  3. Step 3: Cross multiply
    2,181.05x = 3,009.13 × 1,236.73
  4. Step 4: Simplify right side
    2,181.05x = 3,721,470.73
  5. Step 5: Solve for x
    x = 3,721,470.73/2,181.05
  6. Step 6: Final answer
    x = 1,706.27

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Half scale
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Double scale
Find fourth proportional to 2,182.05, 3,010.51 and 1,237.73
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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.