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Finding the Fourth Proportional to 1,262.89, 1,893.12 and 776.08

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Solution

The fourth proportional to 1,262.89, 1,893.12 and 776.08 is: 1,163.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.89 : 1,893.12 = 776.08 : x
  2. Step 2: Convert to fraction form
    1,262.89/1,893.12 = 776.08/x
  3. Step 3: Cross multiply
    1,262.89x = 1,893.12 × 776.08
  4. Step 4: Simplify right side
    1,262.89x = 1,469,212.57
  5. Step 5: Solve for x
    x = 1,469,212.57/1,262.89
  6. Step 6: Final answer
    x = 1,163.37

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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.