Home / 1,778.51-2,667.75-1,396.19

Finding the Fourth Proportional to 1,778.51, 2,667.75 and 1,396.19

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Solution

The fourth proportional to 1,778.51, 2,667.75 and 1,396.19 is: 2,094.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.51 : 2,667.75 = 1,396.19 : x
  2. Step 2: Convert to fraction form
    1,778.51/2,667.75 = 1,396.19/x
  3. Step 3: Cross multiply
    1,778.51x = 2,667.75 × 1,396.19
  4. Step 4: Simplify right side
    1,778.51x = 3,724,685.87
  5. Step 5: Solve for x
    x = 3,724,685.87/1,778.51
  6. Step 6: Final answer
    x = 2,094.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.