Home / 4,107.20-6,161.90-1,185.76

Finding the Fourth Proportional to 4,107.20, 6,161.90 and 1,185.76

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Solution

The fourth proportional to 4,107.20, 6,161.90 and 1,185.76 is: 1,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,107.20 : 6,161.90 = 1,185.76 : x
  2. Step 2: Convert to fraction form
    4,107.20/6,161.90 = 1,185.76/x
  3. Step 3: Cross multiply
    4,107.20x = 6,161.90 × 1,185.76
  4. Step 4: Simplify right side
    4,107.20x = 7,306,534.54
  5. Step 5: Solve for x
    x = 7,306,534.54/4,107.20
  6. Step 6: Final answer
    x = 1,778.96

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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.