Home / 3,404.39-5,106.60-939.15

Finding the Fourth Proportional to 3,404.39, 5,106.60 and 939.15

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Solution

The fourth proportional to 3,404.39, 5,106.60 and 939.15 is: 1,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.39 : 5,106.60 = 939.15 : x
  2. Step 2: Convert to fraction form
    3,404.39/5,106.60 = 939.15/x
  3. Step 3: Cross multiply
    3,404.39x = 5,106.60 × 939.15
  4. Step 4: Simplify right side
    3,404.39x = 4,795,863.39
  5. Step 5: Solve for x
    x = 4,795,863.39/3,404.39
  6. Step 6: Final answer
    x = 1,408.73

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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.