Home / 1,383.04-2,074.94-409.15

Finding the Fourth Proportional to 1,383.04, 2,074.94 and 409.15

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Solution

The fourth proportional to 1,383.04, 2,074.94 and 409.15 is: 613.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.04 : 2,074.94 = 409.15 : x
  2. Step 2: Convert to fraction form
    1,383.04/2,074.94 = 409.15/x
  3. Step 3: Cross multiply
    1,383.04x = 2,074.94 × 409.15
  4. Step 4: Simplify right side
    1,383.04x = 848,961.70
  5. Step 5: Solve for x
    x = 848,961.70/1,383.04
  6. Step 6: Final answer
    x = 613.84

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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.