Home / 2,213.78-3,055.06-1,219.06

Finding the Fourth Proportional to 2,213.78, 3,055.06 and 1,219.06

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Solution

The fourth proportional to 2,213.78, 3,055.06 and 1,219.06 is: 1,682.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.78 : 3,055.06 = 1,219.06 : x
  2. Step 2: Convert to fraction form
    2,213.78/3,055.06 = 1,219.06/x
  3. Step 3: Cross multiply
    2,213.78x = 3,055.06 × 1,219.06
  4. Step 4: Simplify right side
    2,213.78x = 3,724,301.44
  5. Step 5: Solve for x
    x = 3,724,301.44/2,213.78
  6. Step 6: Final answer
    x = 1,682.33

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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.