Home / 3,991.82-5,508.93-2,398.95

Finding the Fourth Proportional to 3,991.82, 5,508.93 and 2,398.95

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Solution

The fourth proportional to 3,991.82, 5,508.93 and 2,398.95 is: 3,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.82 : 5,508.93 = 2,398.95 : x
  2. Step 2: Convert to fraction form
    3,991.82/5,508.93 = 2,398.95/x
  3. Step 3: Cross multiply
    3,991.82x = 5,508.93 × 2,398.95
  4. Step 4: Simplify right side
    3,991.82x = 13,215,635.63
  5. Step 5: Solve for x
    x = 13,215,635.63/3,991.82
  6. Step 6: Final answer
    x = 3,310.68

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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.