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Finding the Fourth Proportional to 9,230.39, 13,845.78 and 2,990.39

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Solution

The fourth proportional to 9,230.39, 13,845.78 and 2,990.39 is: 4,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,230.39 : 13,845.78 = 2,990.39 : x
  2. Step 2: Convert to fraction form
    9,230.39/13,845.78 = 2,990.39/x
  3. Step 3: Cross multiply
    9,230.39x = 13,845.78 × 2,990.39
  4. Step 4: Simplify right side
    9,230.39x = 41,404,212.83
  5. Step 5: Solve for x
    x = 41,404,212.83/9,230.39
  6. Step 6: Final answer
    x = 4,485.64

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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.