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Finding the Fourth Proportional to 2,638.82, 3,958.11 and 995.24

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Solution

The fourth proportional to 2,638.82, 3,958.11 and 995.24 is: 1,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.82 : 3,958.11 = 995.24 : x
  2. Step 2: Convert to fraction form
    2,638.82/3,958.11 = 995.24/x
  3. Step 3: Cross multiply
    2,638.82x = 3,958.11 × 995.24
  4. Step 4: Simplify right side
    2,638.82x = 3,939,279.29
  5. Step 5: Solve for x
    x = 3,939,279.29/2,638.82
  6. Step 6: Final answer
    x = 1,492.82

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1.5x scale

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.