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Finding the Fourth Proportional to 3,886.88, 5,363.71 and 2,208.07

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Solution

The fourth proportional to 3,886.88, 5,363.71 and 2,208.07 is: 3,047.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.88 : 5,363.71 = 2,208.07 : x
  2. Step 2: Convert to fraction form
    3,886.88/5,363.71 = 2,208.07/x
  3. Step 3: Cross multiply
    3,886.88x = 5,363.71 × 2,208.07
  4. Step 4: Simplify right side
    3,886.88x = 11,843,447.14
  5. Step 5: Solve for x
    x = 11,843,447.14/3,886.88
  6. Step 6: Final answer
    x = 3,047.03

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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.