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Finding the Fourth Proportional to 1,957.88, 2,935.91 and 917.54

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Solution

The fourth proportional to 1,957.88, 2,935.91 and 917.54 is: 1,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.88 : 2,935.91 = 917.54 : x
  2. Step 2: Convert to fraction form
    1,957.88/2,935.91 = 917.54/x
  3. Step 3: Cross multiply
    1,957.88x = 2,935.91 × 917.54
  4. Step 4: Simplify right side
    1,957.88x = 2,693,813.49
  5. Step 5: Solve for x
    x = 2,693,813.49/1,957.88
  6. Step 6: Final answer
    x = 1,375.88

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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.