Home / 10,910.75-16,366.80-3,120.17

Finding the Fourth Proportional to 10,910.75, 16,366.80 and 3,120.17

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Solution

The fourth proportional to 10,910.75, 16,366.80 and 3,120.17 is: 4,680.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,910.75 : 16,366.80 = 3,120.17 : x
  2. Step 2: Convert to fraction form
    10,910.75/16,366.80 = 3,120.17/x
  3. Step 3: Cross multiply
    10,910.75x = 16,366.80 × 3,120.17
  4. Step 4: Simplify right side
    10,910.75x = 51,067,198.36
  5. Step 5: Solve for x
    x = 51,067,198.36/10,910.75
  6. Step 6: Final answer
    x = 4,680.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.