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Finding the Fourth Proportional to 3,799, 5,245.50 and 3,674.20

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Solution

The fourth proportional to 3,799, 5,245.50 and 3,674.20 is: 5,073.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799 : 5,245.50 = 3,674.20 : x
  2. Step 2: Convert to fraction form
    3,799/5,245.50 = 3,674.20/x
  3. Step 3: Cross multiply
    3,799x = 5,245.50 × 3,674.20
  4. Step 4: Simplify right side
    3,799x = 19,273,016.10
  5. Step 5: Solve for x
    x = 19,273,016.10/3,799
  6. Step 6: Final answer
    x = 5,073.18

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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.