Home / 3,079.40-4,249.62-1,682.15

Finding the Fourth Proportional to 3,079.40, 4,249.62 and 1,682.15

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Solution

The fourth proportional to 3,079.40, 4,249.62 and 1,682.15 is: 2,321.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.40 : 4,249.62 = 1,682.15 : x
  2. Step 2: Convert to fraction form
    3,079.40/4,249.62 = 1,682.15/x
  3. Step 3: Cross multiply
    3,079.40x = 4,249.62 × 1,682.15
  4. Step 4: Simplify right side
    3,079.40x = 7,148,477.03
  5. Step 5: Solve for x
    x = 7,148,477.03/3,079.40
  6. Step 6: Final answer
    x = 2,321.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.