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Finding the Fourth Proportional to 8,220.50, 11,344.38 and 4,494.50

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Solution

The fourth proportional to 8,220.50, 11,344.38 and 4,494.50 is: 6,202.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.50 : 11,344.38 = 4,494.50 : x
  2. Step 2: Convert to fraction form
    8,220.50/11,344.38 = 4,494.50/x
  3. Step 3: Cross multiply
    8,220.50x = 11,344.38 × 4,494.50
  4. Step 4: Simplify right side
    8,220.50x = 50,987,315.91
  5. Step 5: Solve for x
    x = 50,987,315.91/8,220.50
  6. Step 6: Final answer
    x = 6,202.46

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Double scale
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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.