Home / 11,991.35-17,985.40-3,226.79

Finding the Fourth Proportional to 11,991.35, 17,985.40 and 3,226.79

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Solution

The fourth proportional to 11,991.35, 17,985.40 and 3,226.79 is: 4,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.35 : 17,985.40 = 3,226.79 : x
  2. Step 2: Convert to fraction form
    11,991.35/17,985.40 = 3,226.79/x
  3. Step 3: Cross multiply
    11,991.35x = 17,985.40 × 3,226.79
  4. Step 4: Simplify right side
    11,991.35x = 58,035,108.87
  5. Step 5: Solve for x
    x = 58,035,108.87/11,991.35
  6. Step 6: Final answer
    x = 4,839.75

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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.