Home / 3,519.75-5,279.99-1,211.25

Finding the Fourth Proportional to 3,519.75, 5,279.99 and 1,211.25

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Solution

The fourth proportional to 3,519.75, 5,279.99 and 1,211.25 is: 1,817.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.75 : 5,279.99 = 1,211.25 : x
  2. Step 2: Convert to fraction form
    3,519.75/5,279.99 = 1,211.25/x
  3. Step 3: Cross multiply
    3,519.75x = 5,279.99 × 1,211.25
  4. Step 4: Simplify right side
    3,519.75x = 6,395,381.83
  5. Step 5: Solve for x
    x = 6,395,381.83/3,519.75
  6. Step 6: Final answer
    x = 1,817.00

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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.