Home / 2,486.21-3,730.89-1,391.30

Finding the Fourth Proportional to 2,486.21, 3,730.89 and 1,391.30

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Solution

The fourth proportional to 2,486.21, 3,730.89 and 1,391.30 is: 2,087.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.21 : 3,730.89 = 1,391.30 : x
  2. Step 2: Convert to fraction form
    2,486.21/3,730.89 = 1,391.30/x
  3. Step 3: Cross multiply
    2,486.21x = 3,730.89 × 1,391.30
  4. Step 4: Simplify right side
    2,486.21x = 5,190,768.60
  5. Step 5: Solve for x
    x = 5,190,768.60/2,486.21
  6. Step 6: Final answer
    x = 2,087.83

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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.