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Finding the Fourth Proportional to 7,220.43, 9,961.85 and 4,033.22

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Solution

The fourth proportional to 7,220.43, 9,961.85 and 4,033.22 is: 5,564.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.43 : 9,961.85 = 4,033.22 : x
  2. Step 2: Convert to fraction form
    7,220.43/9,961.85 = 4,033.22/x
  3. Step 3: Cross multiply
    7,220.43x = 9,961.85 × 4,033.22
  4. Step 4: Simplify right side
    7,220.43x = 40,178,292.93
  5. Step 5: Solve for x
    x = 40,178,292.93/7,220.43
  6. Step 6: Final answer
    x = 5,564.53

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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.