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Finding the Fourth Proportional to 4,617.28, 6,919.64 and 3,378.88

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Solution

The fourth proportional to 4,617.28, 6,919.64 and 3,378.88 is: 5,063.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,617.28 : 6,919.64 = 3,378.88 : x
  2. Step 2: Convert to fraction form
    4,617.28/6,919.64 = 3,378.88/x
  3. Step 3: Cross multiply
    4,617.28x = 6,919.64 × 3,378.88
  4. Step 4: Simplify right side
    4,617.28x = 23,380,633.20
  5. Step 5: Solve for x
    x = 23,380,633.20/4,617.28
  6. Step 6: Final answer
    x = 5,063.72

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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.