Home / 6,191.20-9,287.60-3,072.80

Finding the Fourth Proportional to 6,191.20, 9,287.60 and 3,072.80

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Solution

The fourth proportional to 6,191.20, 9,287.60 and 3,072.80 is: 4,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,191.20 : 9,287.60 = 3,072.80 : x
  2. Step 2: Convert to fraction form
    6,191.20/9,287.60 = 3,072.80/x
  3. Step 3: Cross multiply
    6,191.20x = 9,287.60 × 3,072.80
  4. Step 4: Simplify right side
    6,191.20x = 28,538,937.28
  5. Step 5: Solve for x
    x = 28,538,937.28/6,191.20
  6. Step 6: Final answer
    x = 4,609.60

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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.