Home / 3,380.39-4,667-3,171.23

Finding the Fourth Proportional to 3,380.39, 4,667 and 3,171.23

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Solution

The fourth proportional to 3,380.39, 4,667 and 3,171.23 is: 4,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.39 : 4,667 = 3,171.23 : x
  2. Step 2: Convert to fraction form
    3,380.39/4,667 = 3,171.23/x
  3. Step 3: Cross multiply
    3,380.39x = 4,667 × 3,171.23
  4. Step 4: Simplify right side
    3,380.39x = 14,800,130.41
  5. Step 5: Solve for x
    x = 14,800,130.41/3,380.39
  6. Step 6: Final answer
    x = 4,378.23

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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.