Home / 2,776.11-3,831.26-1,728.33

Finding the Fourth Proportional to 2,776.11, 3,831.26 and 1,728.33

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Solution

The fourth proportional to 2,776.11, 3,831.26 and 1,728.33 is: 2,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.11 : 3,831.26 = 1,728.33 : x
  2. Step 2: Convert to fraction form
    2,776.11/3,831.26 = 1,728.33/x
  3. Step 3: Cross multiply
    2,776.11x = 3,831.26 × 1,728.33
  4. Step 4: Simplify right side
    2,776.11x = 6,621,672.95
  5. Step 5: Solve for x
    x = 6,621,672.95/2,776.11
  6. Step 6: Final answer
    x = 2,385.23

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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.