Home / 2,115.82-3,175.78-1,020.95

Finding the Fourth Proportional to 2,115.82, 3,175.78 and 1,020.95

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Solution

The fourth proportional to 2,115.82, 3,175.78 and 1,020.95 is: 1,532.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.82 : 3,175.78 = 1,020.95 : x
  2. Step 2: Convert to fraction form
    2,115.82/3,175.78 = 1,020.95/x
  3. Step 3: Cross multiply
    2,115.82x = 3,175.78 × 1,020.95
  4. Step 4: Simplify right side
    2,115.82x = 3,242,307.49
  5. Step 5: Solve for x
    x = 3,242,307.49/2,115.82
  6. Step 6: Final answer
    x = 1,532.42

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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.