Home / 3,079.37-4,249.53-1,682.12

Finding the Fourth Proportional to 3,079.37, 4,249.53 and 1,682.12

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Solution

The fourth proportional to 3,079.37, 4,249.53 and 1,682.12 is: 2,321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.37 : 4,249.53 = 1,682.12 : x
  2. Step 2: Convert to fraction form
    3,079.37/4,249.53 = 1,682.12/x
  3. Step 3: Cross multiply
    3,079.37x = 4,249.53 × 1,682.12
  4. Step 4: Simplify right side
    3,079.37x = 7,148,231.15
  5. Step 5: Solve for x
    x = 7,148,231.15/3,079.37
  6. Step 6: Final answer
    x = 2,321.33

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Half scale
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Double scale
Find fourth proportional to 3,080.37, 4,250.91 and 1,683.12
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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.