Home / 3,894.79-5,374.64-2,216.34

Finding the Fourth Proportional to 3,894.79, 5,374.64 and 2,216.34

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Solution

The fourth proportional to 3,894.79, 5,374.64 and 2,216.34 is: 3,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.79 : 5,374.64 = 2,216.34 : x
  2. Step 2: Convert to fraction form
    3,894.79/5,374.64 = 2,216.34/x
  3. Step 3: Cross multiply
    3,894.79x = 5,374.64 × 2,216.34
  4. Step 4: Simplify right side
    3,894.79x = 11,911,991.66
  5. Step 5: Solve for x
    x = 11,911,991.66/3,894.79
  6. Step 6: Final answer
    x = 3,058.44

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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.