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Finding the Fourth Proportional to 6,245.64, 8,620.20 and 5,747.46

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Solution

The fourth proportional to 6,245.64, 8,620.20 and 5,747.46 is: 7,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,245.64 : 8,620.20 = 5,747.46 : x
  2. Step 2: Convert to fraction form
    6,245.64/8,620.20 = 5,747.46/x
  3. Step 3: Cross multiply
    6,245.64x = 8,620.20 × 5,747.46
  4. Step 4: Simplify right side
    6,245.64x = 49,544,254.69
  5. Step 5: Solve for x
    x = 49,544,254.69/6,245.64
  6. Step 6: Final answer
    x = 7,932.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.