Home / 3,652.20-5,475.78-1,311.12

Finding the Fourth Proportional to 3,652.20, 5,475.78 and 1,311.12

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Solution

The fourth proportional to 3,652.20, 5,475.78 and 1,311.12 is: 1,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652.20 : 5,475.78 = 1,311.12 : x
  2. Step 2: Convert to fraction form
    3,652.20/5,475.78 = 1,311.12/x
  3. Step 3: Cross multiply
    3,652.20x = 5,475.78 × 1,311.12
  4. Step 4: Simplify right side
    3,652.20x = 7,179,404.67
  5. Step 5: Solve for x
    x = 7,179,404.67/3,652.20
  6. Step 6: Final answer
    x = 1,965.78

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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.