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Finding the Fourth Proportional to 7,321.35, 10,982.03 and 4,221.62

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Solution

The fourth proportional to 7,321.35, 10,982.03 and 4,221.62 is: 6,332.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.35 : 10,982.03 = 4,221.62 : x
  2. Step 2: Convert to fraction form
    7,321.35/10,982.03 = 4,221.62/x
  3. Step 3: Cross multiply
    7,321.35x = 10,982.03 × 4,221.62
  4. Step 4: Simplify right side
    7,321.35x = 46,361,881.47
  5. Step 5: Solve for x
    x = 46,361,881.47/7,321.35
  6. Step 6: Final answer
    x = 6,332.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.