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Finding the Fourth Proportional to 1,962, 2,708.17 and 1,263.38

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Solution

The fourth proportional to 1,962, 2,708.17 and 1,263.38 is: 1,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962 : 2,708.17 = 1,263.38 : x
  2. Step 2: Convert to fraction form
    1,962/2,708.17 = 1,263.38/x
  3. Step 3: Cross multiply
    1,962x = 2,708.17 × 1,263.38
  4. Step 4: Simplify right side
    1,962x = 3,421,431.12
  5. Step 5: Solve for x
    x = 3,421,431.12/1,962
  6. Step 6: Final answer
    x = 1,743.85

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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.