Home / 3,815.88-5,720.04-2,148.06

Finding the Fourth Proportional to 3,815.88, 5,720.04 and 2,148.06

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Solution

The fourth proportional to 3,815.88, 5,720.04 and 2,148.06 is: 3,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.88 : 5,720.04 = 2,148.06 : x
  2. Step 2: Convert to fraction form
    3,815.88/5,720.04 = 2,148.06/x
  3. Step 3: Cross multiply
    3,815.88x = 5,720.04 × 2,148.06
  4. Step 4: Simplify right side
    3,815.88x = 12,286,989.12
  5. Step 5: Solve for x
    x = 12,286,989.12/3,815.88
  6. Step 6: Final answer
    x = 3,219.96

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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.