Home / 3,946.32-5,446.31-2,178.04

Finding the Fourth Proportional to 3,946.32, 5,446.31 and 2,178.04

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Solution

The fourth proportional to 3,946.32, 5,446.31 and 2,178.04 is: 3,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.32 : 5,446.31 = 2,178.04 : x
  2. Step 2: Convert to fraction form
    3,946.32/5,446.31 = 2,178.04/x
  3. Step 3: Cross multiply
    3,946.32x = 5,446.31 × 2,178.04
  4. Step 4: Simplify right side
    3,946.32x = 11,862,285.12
  5. Step 5: Solve for x
    x = 11,862,285.12/3,946.32
  6. Step 6: Final answer
    x = 3,005.91

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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.