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Finding the Fourth Proportional to 3,712.49, 5,568.93 and 939.19

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Solution

The fourth proportional to 3,712.49, 5,568.93 and 939.19 is: 1,408.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.49 : 5,568.93 = 939.19 : x
  2. Step 2: Convert to fraction form
    3,712.49/5,568.93 = 939.19/x
  3. Step 3: Cross multiply
    3,712.49x = 5,568.93 × 939.19
  4. Step 4: Simplify right side
    3,712.49x = 5,230,269.44
  5. Step 5: Solve for x
    x = 5,230,269.44/3,712.49
  6. Step 6: Final answer
    x = 1,408.83

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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.