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Finding the Fourth Proportional to 1,957, 2,699.58 and 1,169.68

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Solution

The fourth proportional to 1,957, 2,699.58 and 1,169.68 is: 1,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957 : 2,699.58 = 1,169.68 : x
  2. Step 2: Convert to fraction form
    1,957/2,699.58 = 1,169.68/x
  3. Step 3: Cross multiply
    1,957x = 2,699.58 × 1,169.68
  4. Step 4: Simplify right side
    1,957x = 3,157,644.73
  5. Step 5: Solve for x
    x = 3,157,644.73/1,957
  6. Step 6: Final answer
    x = 1,613.51

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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.