Home / 4,910.78-6,777.79-2,814.91

Finding the Fourth Proportional to 4,910.78, 6,777.79 and 2,814.91

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Solution

The fourth proportional to 4,910.78, 6,777.79 and 2,814.91 is: 3,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.78 : 6,777.79 = 2,814.91 : x
  2. Step 2: Convert to fraction form
    4,910.78/6,777.79 = 2,814.91/x
  3. Step 3: Cross multiply
    4,910.78x = 6,777.79 × 2,814.91
  4. Step 4: Simplify right side
    4,910.78x = 19,078,868.85
  5. Step 5: Solve for x
    x = 19,078,868.85/4,910.78
  6. Step 6: Final answer
    x = 3,885.10

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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.