Home / 3,388.14-4,674.15-1,990.26

Finding the Fourth Proportional to 3,388.14, 4,674.15 and 1,990.26

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Solution

The fourth proportional to 3,388.14, 4,674.15 and 1,990.26 is: 2,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.14 : 4,674.15 = 1,990.26 : x
  2. Step 2: Convert to fraction form
    3,388.14/4,674.15 = 1,990.26/x
  3. Step 3: Cross multiply
    3,388.14x = 4,674.15 × 1,990.26
  4. Step 4: Simplify right side
    3,388.14x = 9,302,773.78
  5. Step 5: Solve for x
    x = 9,302,773.78/3,388.14
  6. Step 6: Final answer
    x = 2,745.69

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Double scale
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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.