Home / 3,218.40-4,441.91-1,892.43

Finding the Fourth Proportional to 3,218.40, 4,441.91 and 1,892.43

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Solution

The fourth proportional to 3,218.40, 4,441.91 and 1,892.43 is: 2,611.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.40 : 4,441.91 = 1,892.43 : x
  2. Step 2: Convert to fraction form
    3,218.40/4,441.91 = 1,892.43/x
  3. Step 3: Cross multiply
    3,218.40x = 4,441.91 × 1,892.43
  4. Step 4: Simplify right side
    3,218.40x = 8,405,994.28
  5. Step 5: Solve for x
    x = 8,405,994.28/3,218.40
  6. Step 6: Final answer
    x = 2,611.86

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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.