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Finding the Fourth Proportional to 6,453.48, 8,905.72 and 3,620.88

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Solution

The fourth proportional to 6,453.48, 8,905.72 and 3,620.88 is: 4,996.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.48 : 8,905.72 = 3,620.88 : x
  2. Step 2: Convert to fraction form
    6,453.48/8,905.72 = 3,620.88/x
  3. Step 3: Cross multiply
    6,453.48x = 8,905.72 × 3,620.88
  4. Step 4: Simplify right side
    6,453.48x = 32,246,543.43
  5. Step 5: Solve for x
    x = 32,246,543.43/6,453.48
  6. Step 6: Final answer
    x = 4,996.77

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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.