Home / 2,851.26-3,932.49-2,055.78

Finding the Fourth Proportional to 2,851.26, 3,932.49 and 2,055.78

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Solution

The fourth proportional to 2,851.26, 3,932.49 and 2,055.78 is: 2,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.26 : 3,932.49 = 2,055.78 : x
  2. Step 2: Convert to fraction form
    2,851.26/3,932.49 = 2,055.78/x
  3. Step 3: Cross multiply
    2,851.26x = 3,932.49 × 2,055.78
  4. Step 4: Simplify right side
    2,851.26x = 8,084,334.29
  5. Step 5: Solve for x
    x = 8,084,334.29/2,851.26
  6. Step 6: Final answer
    x = 2,835.35

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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.