Home / 3,105.09-4,654.40-1,257.48

Finding the Fourth Proportional to 3,105.09, 4,654.40 and 1,257.48

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Solution

The fourth proportional to 3,105.09, 4,654.40 and 1,257.48 is: 1,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.09 : 4,654.40 = 1,257.48 : x
  2. Step 2: Convert to fraction form
    3,105.09/4,654.40 = 1,257.48/x
  3. Step 3: Cross multiply
    3,105.09x = 4,654.40 × 1,257.48
  4. Step 4: Simplify right side
    3,105.09x = 5,852,808.62
  5. Step 5: Solve for x
    x = 5,852,808.62/3,105.09
  6. Step 6: Final answer
    x = 1,884.91

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1.5x scale

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.