Home / 3,946.47-5,446.16-2,178.11

Finding the Fourth Proportional to 3,946.47, 5,446.16 and 2,178.11

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Solution

The fourth proportional to 3,946.47, 5,446.16 and 2,178.11 is: 3,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.47 : 5,446.16 = 2,178.11 : x
  2. Step 2: Convert to fraction form
    3,946.47/5,446.16 = 2,178.11/x
  3. Step 3: Cross multiply
    3,946.47x = 5,446.16 × 2,178.11
  4. Step 4: Simplify right side
    3,946.47x = 11,862,297.44
  5. Step 5: Solve for x
    x = 11,862,297.44/3,946.47
  6. Step 6: Final answer
    x = 3,005.80

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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.