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Finding the Fourth Proportional to 3,404.59, 5,106.89 and 939.44

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Solution

The fourth proportional to 3,404.59, 5,106.89 and 939.44 is: 1,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.59 : 5,106.89 = 939.44 : x
  2. Step 2: Convert to fraction form
    3,404.59/5,106.89 = 939.44/x
  3. Step 3: Cross multiply
    3,404.59x = 5,106.89 × 939.44
  4. Step 4: Simplify right side
    3,404.59x = 4,797,616.74
  5. Step 5: Solve for x
    x = 4,797,616.74/3,404.59
  6. Step 6: Final answer
    x = 1,409.16

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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.