Home / 6,638.49-9,961.79-2,742.39

Finding the Fourth Proportional to 6,638.49, 9,961.79 and 2,742.39

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Solution

The fourth proportional to 6,638.49, 9,961.79 and 2,742.39 is: 4,115.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.49 : 9,961.79 = 2,742.39 : x
  2. Step 2: Convert to fraction form
    6,638.49/9,961.79 = 2,742.39/x
  3. Step 3: Cross multiply
    6,638.49x = 9,961.79 × 2,742.39
  4. Step 4: Simplify right side
    6,638.49x = 27,319,113.28
  5. Step 5: Solve for x
    x = 27,319,113.28/6,638.49
  6. Step 6: Final answer
    x = 4,115.26

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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.