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Finding the Fourth Proportional to 2,279.88, 3,419.82 and 893.63

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Solution

The fourth proportional to 2,279.88, 3,419.82 and 893.63 is: 1,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.88 : 3,419.82 = 893.63 : x
  2. Step 2: Convert to fraction form
    2,279.88/3,419.82 = 893.63/x
  3. Step 3: Cross multiply
    2,279.88x = 3,419.82 × 893.63
  4. Step 4: Simplify right side
    2,279.88x = 3,056,062.30
  5. Step 5: Solve for x
    x = 3,056,062.30/2,279.88
  6. Step 6: Final answer
    x = 1,340.45

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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.