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Finding the Fourth Proportional to 4,910.40, 6,777 and 2,814.12

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Solution

The fourth proportional to 4,910.40, 6,777 and 2,814.12 is: 3,883.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.40 : 6,777 = 2,814.12 : x
  2. Step 2: Convert to fraction form
    4,910.40/6,777 = 2,814.12/x
  3. Step 3: Cross multiply
    4,910.40x = 6,777 × 2,814.12
  4. Step 4: Simplify right side
    4,910.40x = 19,071,291.24
  5. Step 5: Solve for x
    x = 19,071,291.24/4,910.40
  6. Step 6: Final answer
    x = 3,883.86

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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.