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Finding the Fourth Proportional to 7,221.43, 9,962.62 and 4,388.86

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Solution

The fourth proportional to 7,221.43, 9,962.62 and 4,388.86 is: 6,054.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.43 : 9,962.62 = 4,388.86 : x
  2. Step 2: Convert to fraction form
    7,221.43/9,962.62 = 4,388.86/x
  3. Step 3: Cross multiply
    7,221.43x = 9,962.62 × 4,388.86
  4. Step 4: Simplify right side
    7,221.43x = 43,724,544.41
  5. Step 5: Solve for x
    x = 43,724,544.41/7,221.43
  6. Step 6: Final answer
    x = 6,054.83

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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.