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Finding the Fourth Proportional to 6,221.46, 8,579.72 and 4,808.28

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Solution

The fourth proportional to 6,221.46, 8,579.72 and 4,808.28 is: 6,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.46 : 8,579.72 = 4,808.28 : x
  2. Step 2: Convert to fraction form
    6,221.46/8,579.72 = 4,808.28/x
  3. Step 3: Cross multiply
    6,221.46x = 8,579.72 × 4,808.28
  4. Step 4: Simplify right side
    6,221.46x = 41,253,696.08
  5. Step 5: Solve for x
    x = 41,253,696.08/6,221.46
  6. Step 6: Final answer
    x = 6,630.87

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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.