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Finding the Fourth Proportional to 1,424.11, 1,966.49 and 893.89

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Solution

The fourth proportional to 1,424.11, 1,966.49 and 893.89 is: 1,234.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.11 : 1,966.49 = 893.89 : x
  2. Step 2: Convert to fraction form
    1,424.11/1,966.49 = 893.89/x
  3. Step 3: Cross multiply
    1,424.11x = 1,966.49 × 893.89
  4. Step 4: Simplify right side
    1,424.11x = 1,757,825.75
  5. Step 5: Solve for x
    x = 1,757,825.75/1,424.11
  6. Step 6: Final answer
    x = 1,234.33

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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.