Home / 2,808.54-3,876.12-1,629.36

Finding the Fourth Proportional to 2,808.54, 3,876.12 and 1,629.36

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Solution

The fourth proportional to 2,808.54, 3,876.12 and 1,629.36 is: 2,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.54 : 3,876.12 = 1,629.36 : x
  2. Step 2: Convert to fraction form
    2,808.54/3,876.12 = 1,629.36/x
  3. Step 3: Cross multiply
    2,808.54x = 3,876.12 × 1,629.36
  4. Step 4: Simplify right side
    2,808.54x = 6,315,594.88
  5. Step 5: Solve for x
    x = 6,315,594.88/2,808.54
  6. Step 6: Final answer
    x = 2,248.71

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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.