Home / 2,872.75-3,965.91-1,933.48

Finding the Fourth Proportional to 2,872.75, 3,965.91 and 1,933.48

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Solution

The fourth proportional to 2,872.75, 3,965.91 and 1,933.48 is: 2,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.75 : 3,965.91 = 1,933.48 : x
  2. Step 2: Convert to fraction form
    2,872.75/3,965.91 = 1,933.48/x
  3. Step 3: Cross multiply
    2,872.75x = 3,965.91 × 1,933.48
  4. Step 4: Simplify right side
    2,872.75x = 7,668,016.25
  5. Step 5: Solve for x
    x = 7,668,016.25/2,872.75
  6. Step 6: Final answer
    x = 2,669.22

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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.