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Finding the Fourth Proportional to 3,187.89, 4,779.26 and 995.49

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Solution

The fourth proportional to 3,187.89, 4,779.26 and 995.49 is: 1,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.89 : 4,779.26 = 995.49 : x
  2. Step 2: Convert to fraction form
    3,187.89/4,779.26 = 995.49/x
  3. Step 3: Cross multiply
    3,187.89x = 4,779.26 × 995.49
  4. Step 4: Simplify right side
    3,187.89x = 4,757,700.56
  5. Step 5: Solve for x
    x = 4,757,700.56/3,187.89
  6. Step 6: Final answer
    x = 1,492.43

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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.