Home / 2,777.26-3,831.96-1,728.76

Finding the Fourth Proportional to 2,777.26, 3,831.96 and 1,728.76

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Solution

The fourth proportional to 2,777.26, 3,831.96 and 1,728.76 is: 2,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.26 : 3,831.96 = 1,728.76 : x
  2. Step 2: Convert to fraction form
    2,777.26/3,831.96 = 1,728.76/x
  3. Step 3: Cross multiply
    2,777.26x = 3,831.96 × 1,728.76
  4. Step 4: Simplify right side
    2,777.26x = 6,624,539.17
  5. Step 5: Solve for x
    x = 6,624,539.17/2,777.26
  6. Step 6: Final answer
    x = 2,385.28

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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.