Home / 3,853.37-5,779.41-1,387.73

Finding the Fourth Proportional to 3,853.37, 5,779.41 and 1,387.73

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Solution

The fourth proportional to 3,853.37, 5,779.41 and 1,387.73 is: 2,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.37 : 5,779.41 = 1,387.73 : x
  2. Step 2: Convert to fraction form
    3,853.37/5,779.41 = 1,387.73/x
  3. Step 3: Cross multiply
    3,853.37x = 5,779.41 × 1,387.73
  4. Step 4: Simplify right side
    3,853.37x = 8,020,260.64
  5. Step 5: Solve for x
    x = 8,020,260.64/3,853.37
  6. Step 6: Final answer
    x = 2,081.36

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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.