Home / 3,813.20-5,714.64-2,148.64

Finding the Fourth Proportional to 3,813.20, 5,714.64 and 2,148.64

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Solution

The fourth proportional to 3,813.20, 5,714.64 and 2,148.64 is: 3,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.20 : 5,714.64 = 2,148.64 : x
  2. Step 2: Convert to fraction form
    3,813.20/5,714.64 = 2,148.64/x
  3. Step 3: Cross multiply
    3,813.20x = 5,714.64 × 2,148.64
  4. Step 4: Simplify right side
    3,813.20x = 12,278,704.09
  5. Step 5: Solve for x
    x = 12,278,704.09/3,813.20
  6. Step 6: Final answer
    x = 3,220.05

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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.