Home / 3,404.30-5,106.42-939.13

Finding the Fourth Proportional to 3,404.30, 5,106.42 and 939.13

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Solution

The fourth proportional to 3,404.30, 5,106.42 and 939.13 is: 1,408.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.30 : 5,106.42 = 939.13 : x
  2. Step 2: Convert to fraction form
    3,404.30/5,106.42 = 939.13/x
  3. Step 3: Cross multiply
    3,404.30x = 5,106.42 × 939.13
  4. Step 4: Simplify right side
    3,404.30x = 4,795,579.45
  5. Step 5: Solve for x
    x = 4,795,579.45/3,404.30
  6. Step 6: Final answer
    x = 1,408.69

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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.