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Finding the Fourth Proportional to 3,187.08, 4,779 and 995.76

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Solution

The fourth proportional to 3,187.08, 4,779 and 995.76 is: 1,493.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.08 : 4,779 = 995.76 : x
  2. Step 2: Convert to fraction form
    3,187.08/4,779 = 995.76/x
  3. Step 3: Cross multiply
    3,187.08x = 4,779 × 995.76
  4. Step 4: Simplify right side
    3,187.08x = 4,758,737.04
  5. Step 5: Solve for x
    x = 4,758,737.04/3,187.08
  6. Step 6: Final answer
    x = 1,493.13

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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.