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Finding the Fourth Proportional to 3,821.84, 5,259.19 and 3,380.79

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Solution

The fourth proportional to 3,821.84, 5,259.19 and 3,380.79 is: 4,652.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.84 : 5,259.19 = 3,380.79 : x
  2. Step 2: Convert to fraction form
    3,821.84/5,259.19 = 3,380.79/x
  3. Step 3: Cross multiply
    3,821.84x = 5,259.19 × 3,380.79
  4. Step 4: Simplify right side
    3,821.84x = 17,780,216.96
  5. Step 5: Solve for x
    x = 17,780,216.96/3,821.84
  6. Step 6: Final answer
    x = 4,652.27

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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.