Home / 3,082.20-4,621.80-1,765.76

Finding the Fourth Proportional to 3,082.20, 4,621.80 and 1,765.76

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Solution

The fourth proportional to 3,082.20, 4,621.80 and 1,765.76 is: 2,647.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.20 : 4,621.80 = 1,765.76 : x
  2. Step 2: Convert to fraction form
    3,082.20/4,621.80 = 1,765.76/x
  3. Step 3: Cross multiply
    3,082.20x = 4,621.80 × 1,765.76
  4. Step 4: Simplify right side
    3,082.20x = 8,160,989.57
  5. Step 5: Solve for x
    x = 8,160,989.57/3,082.20
  6. Step 6: Final answer
    x = 2,647.78

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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.