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Finding the Fourth Proportional to 6,220.55, 8,584.16 and 3,387.84

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Solution

The fourth proportional to 6,220.55, 8,584.16 and 3,387.84 is: 4,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,220.55 : 8,584.16 = 3,387.84 : x
  2. Step 2: Convert to fraction form
    6,220.55/8,584.16 = 3,387.84/x
  3. Step 3: Cross multiply
    6,220.55x = 8,584.16 × 3,387.84
  4. Step 4: Simplify right side
    6,220.55x = 29,081,743.68
  5. Step 5: Solve for x
    x = 29,081,743.68/6,220.55
  6. Step 6: Final answer
    x = 4,675.11

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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.