Home / 3,946.49-5,446.07-2,178.10

Finding the Fourth Proportional to 3,946.49, 5,446.07 and 2,178.10

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Solution

The fourth proportional to 3,946.49, 5,446.07 and 2,178.10 is: 3,005.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.49 : 5,446.07 = 2,178.10 : x
  2. Step 2: Convert to fraction form
    3,946.49/5,446.07 = 2,178.10/x
  3. Step 3: Cross multiply
    3,946.49x = 5,446.07 × 2,178.10
  4. Step 4: Simplify right side
    3,946.49x = 11,862,085.07
  5. Step 5: Solve for x
    x = 11,862,085.07/3,946.49
  6. Step 6: Final answer
    x = 3,005.73

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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.