Home / 2,185.98-3,279-1,218.23

Finding the Fourth Proportional to 2,185.98, 3,279 and 1,218.23

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Solution

The fourth proportional to 2,185.98, 3,279 and 1,218.23 is: 1,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.98 : 3,279 = 1,218.23 : x
  2. Step 2: Convert to fraction form
    2,185.98/3,279 = 1,218.23/x
  3. Step 3: Cross multiply
    2,185.98x = 3,279 × 1,218.23
  4. Step 4: Simplify right side
    2,185.98x = 3,994,576.17
  5. Step 5: Solve for x
    x = 3,994,576.17/2,185.98
  6. Step 6: Final answer
    x = 1,827.36

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Double scale
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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.