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Finding the Fourth Proportional to 2,458.35, 3,687.93 and 814.66

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Solution

The fourth proportional to 2,458.35, 3,687.93 and 814.66 is: 1,222.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.35 : 3,687.93 = 814.66 : x
  2. Step 2: Convert to fraction form
    2,458.35/3,687.93 = 814.66/x
  3. Step 3: Cross multiply
    2,458.35x = 3,687.93 × 814.66
  4. Step 4: Simplify right side
    2,458.35x = 3,004,399.83
  5. Step 5: Solve for x
    x = 3,004,399.83/2,458.35
  6. Step 6: Final answer
    x = 1,222.12

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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.