Home / 2,815.05-3,884.73-1,556.16

Finding the Fourth Proportional to 2,815.05, 3,884.73 and 1,556.16

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Solution

The fourth proportional to 2,815.05, 3,884.73 and 1,556.16 is: 2,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.05 : 3,884.73 = 1,556.16 : x
  2. Step 2: Convert to fraction form
    2,815.05/3,884.73 = 1,556.16/x
  3. Step 3: Cross multiply
    2,815.05x = 3,884.73 × 1,556.16
  4. Step 4: Simplify right side
    2,815.05x = 6,045,261.44
  5. Step 5: Solve for x
    x = 6,045,261.44/2,815.05
  6. Step 6: Final answer
    x = 2,147.48

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1.5x scale

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.