Home / 2,012.12-2,776.78-1,127.91

Finding the Fourth Proportional to 2,012.12, 2,776.78 and 1,127.91

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Solution

The fourth proportional to 2,012.12, 2,776.78 and 1,127.91 is: 1,556.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.12 : 2,776.78 = 1,127.91 : x
  2. Step 2: Convert to fraction form
    2,012.12/2,776.78 = 1,127.91/x
  3. Step 3: Cross multiply
    2,012.12x = 2,776.78 × 1,127.91
  4. Step 4: Simplify right side
    2,012.12x = 3,131,954.13
  5. Step 5: Solve for x
    x = 3,131,954.13/2,012.12
  6. Step 6: Final answer
    x = 1,556.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.