Home / 3,815.88-5,722.61-1,218.21

Finding the Fourth Proportional to 3,815.88, 5,722.61 and 1,218.21

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Solution

The fourth proportional to 3,815.88, 5,722.61 and 1,218.21 is: 1,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.88 : 5,722.61 = 1,218.21 : x
  2. Step 2: Convert to fraction form
    3,815.88/5,722.61 = 1,218.21/x
  3. Step 3: Cross multiply
    3,815.88x = 5,722.61 × 1,218.21
  4. Step 4: Simplify right side
    3,815.88x = 6,971,334.64
  5. Step 5: Solve for x
    x = 6,971,334.64/3,815.88
  6. Step 6: Final answer
    x = 1,826.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.