Home / 3,927.30-5,419.78-2,134.90

Finding the Fourth Proportional to 3,927.30, 5,419.78 and 2,134.90

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Solution

The fourth proportional to 3,927.30, 5,419.78 and 2,134.90 is: 2,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.30 : 5,419.78 = 2,134.90 : x
  2. Step 2: Convert to fraction form
    3,927.30/5,419.78 = 2,134.90/x
  3. Step 3: Cross multiply
    3,927.30x = 5,419.78 × 2,134.90
  4. Step 4: Simplify right side
    3,927.30x = 11,570,717.96
  5. Step 5: Solve for x
    x = 11,570,717.96/3,927.30
  6. Step 6: Final answer
    x = 2,946.22

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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.