Home / 3,191.28-4,788.12-1,243.60

Finding the Fourth Proportional to 3,191.28, 4,788.12 and 1,243.60

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Solution

The fourth proportional to 3,191.28, 4,788.12 and 1,243.60 is: 1,865.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.28 : 4,788.12 = 1,243.60 : x
  2. Step 2: Convert to fraction form
    3,191.28/4,788.12 = 1,243.60/x
  3. Step 3: Cross multiply
    3,191.28x = 4,788.12 × 1,243.60
  4. Step 4: Simplify right side
    3,191.28x = 5,954,506.03
  5. Step 5: Solve for x
    x = 5,954,506.03/3,191.28
  6. Step 6: Final answer
    x = 1,865.87

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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.