Home / 1,556.54-2,147.94-927.11

Finding the Fourth Proportional to 1,556.54, 2,147.94 and 927.11

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Solution

The fourth proportional to 1,556.54, 2,147.94 and 927.11 is: 1,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.54 : 2,147.94 = 927.11 : x
  2. Step 2: Convert to fraction form
    1,556.54/2,147.94 = 927.11/x
  3. Step 3: Cross multiply
    1,556.54x = 2,147.94 × 927.11
  4. Step 4: Simplify right side
    1,556.54x = 1,991,376.65
  5. Step 5: Solve for x
    x = 1,991,376.65/1,556.54
  6. Step 6: Final answer
    x = 1,279.36

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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.