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Finding the Fourth Proportional to 1,686.62, 2,517.73 and 1,456.99

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Solution

The fourth proportional to 1,686.62, 2,517.73 and 1,456.99 is: 2,174.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.62 : 2,517.73 = 1,456.99 : x
  2. Step 2: Convert to fraction form
    1,686.62/2,517.73 = 1,456.99/x
  3. Step 3: Cross multiply
    1,686.62x = 2,517.73 × 1,456.99
  4. Step 4: Simplify right side
    1,686.62x = 3,668,305.69
  5. Step 5: Solve for x
    x = 3,668,305.69/1,686.62
  6. Step 6: Final answer
    x = 2,174.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.