Home / 3,381.72-5,072.78-1,910.35

Finding the Fourth Proportional to 3,381.72, 5,072.78 and 1,910.35

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Solution

The fourth proportional to 3,381.72, 5,072.78 and 1,910.35 is: 2,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.72 : 5,072.78 = 1,910.35 : x
  2. Step 2: Convert to fraction form
    3,381.72/5,072.78 = 1,910.35/x
  3. Step 3: Cross multiply
    3,381.72x = 5,072.78 × 1,910.35
  4. Step 4: Simplify right side
    3,381.72x = 9,690,785.27
  5. Step 5: Solve for x
    x = 9,690,785.27/3,381.72
  6. Step 6: Final answer
    x = 2,865.64

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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.