Home / 2,087.20-3,131.60-2,054.40

Finding the Fourth Proportional to 2,087.20, 3,131.60 and 2,054.40

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Solution

The fourth proportional to 2,087.20, 3,131.60 and 2,054.40 is: 3,082.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.20 : 3,131.60 = 2,054.40 : x
  2. Step 2: Convert to fraction form
    2,087.20/3,131.60 = 2,054.40/x
  3. Step 3: Cross multiply
    2,087.20x = 3,131.60 × 2,054.40
  4. Step 4: Simplify right side
    2,087.20x = 6,433,559.04
  5. Step 5: Solve for x
    x = 6,433,559.04/2,087.20
  6. Step 6: Final answer
    x = 3,082.39

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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.