Home / 3,946.43-5,445.84-2,178.03

Finding the Fourth Proportional to 3,946.43, 5,445.84 and 2,178.03

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Solution

The fourth proportional to 3,946.43, 5,445.84 and 2,178.03 is: 3,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.43 : 5,445.84 = 2,178.03 : x
  2. Step 2: Convert to fraction form
    3,946.43/5,445.84 = 2,178.03/x
  3. Step 3: Cross multiply
    3,946.43x = 5,445.84 × 2,178.03
  4. Step 4: Simplify right side
    3,946.43x = 11,861,202.90
  5. Step 5: Solve for x
    x = 11,861,202.90/3,946.43
  6. Step 6: Final answer
    x = 3,005.55

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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.