Home / 3,927.16-5,419.74-2,747.80

Finding the Fourth Proportional to 3,927.16, 5,419.74 and 2,747.80

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Solution

The fourth proportional to 3,927.16, 5,419.74 and 2,747.80 is: 3,792.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.16 : 5,419.74 = 2,747.80 : x
  2. Step 2: Convert to fraction form
    3,927.16/5,419.74 = 2,747.80/x
  3. Step 3: Cross multiply
    3,927.16x = 5,419.74 × 2,747.80
  4. Step 4: Simplify right side
    3,927.16x = 14,892,361.57
  5. Step 5: Solve for x
    x = 14,892,361.57/3,927.16
  6. Step 6: Final answer
    x = 3,792.15

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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.