Home / 4,087.80-6,120.72-2,135.88

Finding the Fourth Proportional to 4,087.80, 6,120.72 and 2,135.88

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Solution

The fourth proportional to 4,087.80, 6,120.72 and 2,135.88 is: 3,198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.80 : 6,120.72 = 2,135.88 : x
  2. Step 2: Convert to fraction form
    4,087.80/6,120.72 = 2,135.88/x
  3. Step 3: Cross multiply
    4,087.80x = 6,120.72 × 2,135.88
  4. Step 4: Simplify right side
    4,087.80x = 13,073,123.43
  5. Step 5: Solve for x
    x = 13,073,123.43/4,087.80
  6. Step 6: Final answer
    x = 3,198.08

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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.