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Finding the Fourth Proportional to 6,245.56, 9,366.46 and 5,147.20

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Solution

The fourth proportional to 6,245.56, 9,366.46 and 5,147.20 is: 7,719.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,245.56 : 9,366.46 = 5,147.20 : x
  2. Step 2: Convert to fraction form
    6,245.56/9,366.46 = 5,147.20/x
  3. Step 3: Cross multiply
    6,245.56x = 9,366.46 × 5,147.20
  4. Step 4: Simplify right side
    6,245.56x = 48,211,042.91
  5. Step 5: Solve for x
    x = 48,211,042.91/6,245.56
  6. Step 6: Final answer
    x = 7,719.25

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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.