Home / 3,936.80-5,905.17-1,015.09

Finding the Fourth Proportional to 3,936.80, 5,905.17 and 1,015.09

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Solution

The fourth proportional to 3,936.80, 5,905.17 and 1,015.09 is: 1,522.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.80 : 5,905.17 = 1,015.09 : x
  2. Step 2: Convert to fraction form
    3,936.80/5,905.17 = 1,015.09/x
  3. Step 3: Cross multiply
    3,936.80x = 5,905.17 × 1,015.09
  4. Step 4: Simplify right side
    3,936.80x = 5,994,279.02
  5. Step 5: Solve for x
    x = 5,994,279.02/3,936.80
  6. Step 6: Final answer
    x = 1,522.63

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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.