Home / 1,556.16-2,147.48-857.52

Finding the Fourth Proportional to 1,556.16, 2,147.48 and 857.52

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Solution

The fourth proportional to 1,556.16, 2,147.48 and 857.52 is: 1,183.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.16 : 2,147.48 = 857.52 : x
  2. Step 2: Convert to fraction form
    1,556.16/2,147.48 = 857.52/x
  3. Step 3: Cross multiply
    1,556.16x = 2,147.48 × 857.52
  4. Step 4: Simplify right side
    1,556.16x = 1,841,507.05
  5. Step 5: Solve for x
    x = 1,841,507.05/1,556.16
  6. Step 6: Final answer
    x = 1,183.37

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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.