Home / 4,910.50-6,774.78-2,785.78

Finding the Fourth Proportional to 4,910.50, 6,774.78 and 2,785.78

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Solution

The fourth proportional to 4,910.50, 6,774.78 and 2,785.78 is: 3,843.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.50 : 6,774.78 = 2,785.78 : x
  2. Step 2: Convert to fraction form
    4,910.50/6,774.78 = 2,785.78/x
  3. Step 3: Cross multiply
    4,910.50x = 6,774.78 × 2,785.78
  4. Step 4: Simplify right side
    4,910.50x = 18,873,046.63
  5. Step 5: Solve for x
    x = 18,873,046.63/4,910.50
  6. Step 6: Final answer
    x = 3,843.41

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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.