Home / 3,187.11-4,780.95-995.25

Finding the Fourth Proportional to 3,187.11, 4,780.95 and 995.25

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Solution

The fourth proportional to 3,187.11, 4,780.95 and 995.25 is: 1,492.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.11 : 4,780.95 = 995.25 : x
  2. Step 2: Convert to fraction form
    3,187.11/4,780.95 = 995.25/x
  3. Step 3: Cross multiply
    3,187.11x = 4,780.95 × 995.25
  4. Step 4: Simplify right side
    3,187.11x = 4,758,240.49
  5. Step 5: Solve for x
    x = 4,758,240.49/3,187.11
  6. Step 6: Final answer
    x = 1,492.96

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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.