Home / 3,890.84-5,369.09-2,212.52

Finding the Fourth Proportional to 3,890.84, 5,369.09 and 2,212.52

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Solution

The fourth proportional to 3,890.84, 5,369.09 and 2,212.52 is: 3,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.84 : 5,369.09 = 2,212.52 : x
  2. Step 2: Convert to fraction form
    3,890.84/5,369.09 = 2,212.52/x
  3. Step 3: Cross multiply
    3,890.84x = 5,369.09 × 2,212.52
  4. Step 4: Simplify right side
    3,890.84x = 11,879,181.10
  5. Step 5: Solve for x
    x = 11,879,181.10/3,890.84
  6. Step 6: Final answer
    x = 3,053.12

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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.