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Finding the Fourth Proportional to 3,994.55, 5,508.18 and 2,799.15

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Solution

The fourth proportional to 3,994.55, 5,508.18 and 2,799.15 is: 3,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.55 : 5,508.18 = 2,799.15 : x
  2. Step 2: Convert to fraction form
    3,994.55/5,508.18 = 2,799.15/x
  3. Step 3: Cross multiply
    3,994.55x = 5,508.18 × 2,799.15
  4. Step 4: Simplify right side
    3,994.55x = 15,418,222.05
  5. Step 5: Solve for x
    x = 15,418,222.05/3,994.55
  6. Step 6: Final answer
    x = 3,859.82

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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.