Home / 2,181.36-3,009.60-1,249.68

Finding the Fourth Proportional to 2,181.36, 3,009.60 and 1,249.68

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Solution

The fourth proportional to 2,181.36, 3,009.60 and 1,249.68 is: 1,724.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.36 : 3,009.60 = 1,249.68 : x
  2. Step 2: Convert to fraction form
    2,181.36/3,009.60 = 1,249.68/x
  3. Step 3: Cross multiply
    2,181.36x = 3,009.60 × 1,249.68
  4. Step 4: Simplify right side
    2,181.36x = 3,761,036.93
  5. Step 5: Solve for x
    x = 3,761,036.93/2,181.36
  6. Step 6: Final answer
    x = 1,724.17

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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.