Home / 4,914.45-6,781.71-2,789.85

Finding the Fourth Proportional to 4,914.45, 6,781.71 and 2,789.85

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Solution

The fourth proportional to 4,914.45, 6,781.71 and 2,789.85 is: 3,849.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,914.45 : 6,781.71 = 2,789.85 : x
  2. Step 2: Convert to fraction form
    4,914.45/6,781.71 = 2,789.85/x
  3. Step 3: Cross multiply
    4,914.45x = 6,781.71 × 2,789.85
  4. Step 4: Simplify right side
    4,914.45x = 18,919,953.64
  5. Step 5: Solve for x
    x = 18,919,953.64/4,914.45
  6. Step 6: Final answer
    x = 3,849.86

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1.5x scale

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.