Home / 3,897,747.32-5,378,912.88-2,178,940.28

Finding the Fourth Proportional to 3,897,747.32, 5,378,912.88 and 2,178,940.28

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Solution

The fourth proportional to 3,897,747.32, 5,378,912.88 and 2,178,940.28 is: 3,006,949.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897,747.32 : 5,378,912.88 = 2,178,940.28 : x
  2. Step 2: Convert to fraction form
    3,897,747.32/5,378,912.88 = 2,178,940.28/x
  3. Step 3: Cross multiply
    3,897,747.32x = 5,378,912.88 × 2,178,940.28
  4. Step 4: Simplify right side
    3,897,747.32x = 11,720,329,936,842.80
  5. Step 5: Solve for x
    x = 11,720,329,936,842.80/3,897,747.32
  6. Step 6: Final answer
    x = 3,006,949.65

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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.