Home / 3,778.78-5,667.49-1,439.03

Finding the Fourth Proportional to 3,778.78, 5,667.49 and 1,439.03

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Solution

The fourth proportional to 3,778.78, 5,667.49 and 1,439.03 is: 2,158.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.78 : 5,667.49 = 1,439.03 : x
  2. Step 2: Convert to fraction form
    3,778.78/5,667.49 = 1,439.03/x
  3. Step 3: Cross multiply
    3,778.78x = 5,667.49 × 1,439.03
  4. Step 4: Simplify right side
    3,778.78x = 8,155,688.13
  5. Step 5: Solve for x
    x = 8,155,688.13/3,778.78
  6. Step 6: Final answer
    x = 2,158.29

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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.