Home / 3,105.48-4,651.90-1,540.78

Finding the Fourth Proportional to 3,105.48, 4,651.90 and 1,540.78

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Solution

The fourth proportional to 3,105.48, 4,651.90 and 1,540.78 is: 2,308.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.48 : 4,651.90 = 1,540.78 : x
  2. Step 2: Convert to fraction form
    3,105.48/4,651.90 = 1,540.78/x
  3. Step 3: Cross multiply
    3,105.48x = 4,651.90 × 1,540.78
  4. Step 4: Simplify right side
    3,105.48x = 7,167,554.48
  5. Step 5: Solve for x
    x = 7,167,554.48/3,105.48
  6. Step 6: Final answer
    x = 2,308.03

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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.