Home / 3,778.85-5,667.42-1,439.12

Finding the Fourth Proportional to 3,778.85, 5,667.42 and 1,439.12

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Solution

The fourth proportional to 3,778.85, 5,667.42 and 1,439.12 is: 2,158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.85 : 5,667.42 = 1,439.12 : x
  2. Step 2: Convert to fraction form
    3,778.85/5,667.42 = 1,439.12/x
  3. Step 3: Cross multiply
    3,778.85x = 5,667.42 × 1,439.12
  4. Step 4: Simplify right side
    3,778.85x = 8,156,077.06
  5. Step 5: Solve for x
    x = 8,156,077.06/3,778.85
  6. Step 6: Final answer
    x = 2,158.35

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1.5x scale

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.