Home / 3,914.62-5,402.14-2,122.09

Finding the Fourth Proportional to 3,914.62, 5,402.14 and 2,122.09

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Solution

The fourth proportional to 3,914.62, 5,402.14 and 2,122.09 is: 2,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.62 : 5,402.14 = 2,122.09 : x
  2. Step 2: Convert to fraction form
    3,914.62/5,402.14 = 2,122.09/x
  3. Step 3: Cross multiply
    3,914.62x = 5,402.14 × 2,122.09
  4. Step 4: Simplify right side
    3,914.62x = 11,463,827.27
  5. Step 5: Solve for x
    x = 11,463,827.27/3,914.62
  6. Step 6: Final answer
    x = 2,928.46

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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.