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Finding the Fourth Proportional to 2,755.49, 4,133.91 and 807.69

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Solution

The fourth proportional to 2,755.49, 4,133.91 and 807.69 is: 1,211.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.49 : 4,133.91 = 807.69 : x
  2. Step 2: Convert to fraction form
    2,755.49/4,133.91 = 807.69/x
  3. Step 3: Cross multiply
    2,755.49x = 4,133.91 × 807.69
  4. Step 4: Simplify right side
    2,755.49x = 3,338,910.77
  5. Step 5: Solve for x
    x = 3,338,910.77/2,755.49
  6. Step 6: Final answer
    x = 1,211.73

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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.