Home / 3,890.51-5,369.05-2,212.07

Finding the Fourth Proportional to 3,890.51, 5,369.05 and 2,212.07

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Solution

The fourth proportional to 3,890.51, 5,369.05 and 2,212.07 is: 3,052.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.51 : 5,369.05 = 2,212.07 : x
  2. Step 2: Convert to fraction form
    3,890.51/5,369.05 = 2,212.07/x
  3. Step 3: Cross multiply
    3,890.51x = 5,369.05 × 2,212.07
  4. Step 4: Simplify right side
    3,890.51x = 11,876,684.80
  5. Step 5: Solve for x
    x = 11,876,684.80/3,890.51
  6. Step 6: Final answer
    x = 3,052.74

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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.