Home / 4,974.78-6,865.14-2,878.86

Finding the Fourth Proportional to 4,974.78, 6,865.14 and 2,878.86

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Solution

The fourth proportional to 4,974.78, 6,865.14 and 2,878.86 is: 3,972.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974.78 : 6,865.14 = 2,878.86 : x
  2. Step 2: Convert to fraction form
    4,974.78/6,865.14 = 2,878.86/x
  3. Step 3: Cross multiply
    4,974.78x = 6,865.14 × 2,878.86
  4. Step 4: Simplify right side
    4,974.78x = 19,763,776.94
  5. Step 5: Solve for x
    x = 19,763,776.94/4,974.78
  6. Step 6: Final answer
    x = 3,972.79

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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.