Home / 4,981.78-6,874.78-2,743.87

Finding the Fourth Proportional to 4,981.78, 6,874.78 and 2,743.87

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Solution

The fourth proportional to 4,981.78, 6,874.78 and 2,743.87 is: 3,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.78 : 6,874.78 = 2,743.87 : x
  2. Step 2: Convert to fraction form
    4,981.78/6,874.78 = 2,743.87/x
  3. Step 3: Cross multiply
    4,981.78x = 6,874.78 × 2,743.87
  4. Step 4: Simplify right side
    4,981.78x = 18,863,483.06
  5. Step 5: Solve for x
    x = 18,863,483.06/4,981.78
  6. Step 6: Final answer
    x = 3,786.49

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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.