Home / 3,946.89-5,446.44-2,178.12

Finding the Fourth Proportional to 3,946.89, 5,446.44 and 2,178.12

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Solution

The fourth proportional to 3,946.89, 5,446.44 and 2,178.12 is: 3,005.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.89 : 5,446.44 = 2,178.12 : x
  2. Step 2: Convert to fraction form
    3,946.89/5,446.44 = 2,178.12/x
  3. Step 3: Cross multiply
    3,946.89x = 5,446.44 × 2,178.12
  4. Step 4: Simplify right side
    3,946.89x = 11,862,999.89
  5. Step 5: Solve for x
    x = 11,862,999.89/3,946.89
  6. Step 6: Final answer
    x = 3,005.66

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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.