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Finding the Fourth Proportional to 6,145.64, 8,481.24 and 3,351.20

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Solution

The fourth proportional to 6,145.64, 8,481.24 and 3,351.20 is: 4,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145.64 : 8,481.24 = 3,351.20 : x
  2. Step 2: Convert to fraction form
    6,145.64/8,481.24 = 3,351.20/x
  3. Step 3: Cross multiply
    6,145.64x = 8,481.24 × 3,351.20
  4. Step 4: Simplify right side
    6,145.64x = 28,422,331.49
  5. Step 5: Solve for x
    x = 28,422,331.49/6,145.64
  6. Step 6: Final answer
    x = 4,624.80

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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.