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Finding the Fourth Proportional to 3,894.88, 5,374.92 and 2,216.26

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Solution

The fourth proportional to 3,894.88, 5,374.92 and 2,216.26 is: 3,058.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.88 : 5,374.92 = 2,216.26 : x
  2. Step 2: Convert to fraction form
    3,894.88/5,374.92 = 2,216.26/x
  3. Step 3: Cross multiply
    3,894.88x = 5,374.92 × 2,216.26
  4. Step 4: Simplify right side
    3,894.88x = 11,912,220.20
  5. Step 5: Solve for x
    x = 11,912,220.20/3,894.88
  6. Step 6: Final answer
    x = 3,058.43

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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.