Home / 3,892.09-5,371.51-2,213.91

Finding the Fourth Proportional to 3,892.09, 5,371.51 and 2,213.91

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Solution

The fourth proportional to 3,892.09, 5,371.51 and 2,213.91 is: 3,055.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.09 : 5,371.51 = 2,213.91 : x
  2. Step 2: Convert to fraction form
    3,892.09/5,371.51 = 2,213.91/x
  3. Step 3: Cross multiply
    3,892.09x = 5,371.51 × 2,213.91
  4. Step 4: Simplify right side
    3,892.09x = 11,892,039.70
  5. Step 5: Solve for x
    x = 11,892,039.70/3,892.09
  6. Step 6: Final answer
    x = 3,055.44

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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.