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Finding the Fourth Proportional to 8,449.62, 11,654.94 and 5,090.16

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Solution

The fourth proportional to 8,449.62, 11,654.94 and 5,090.16 is: 7,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.62 : 11,654.94 = 5,090.16 : x
  2. Step 2: Convert to fraction form
    8,449.62/11,654.94 = 5,090.16/x
  3. Step 3: Cross multiply
    8,449.62x = 11,654.94 × 5,090.16
  4. Step 4: Simplify right side
    8,449.62x = 59,325,509.39
  5. Step 5: Solve for x
    x = 59,325,509.39/8,449.62
  6. Step 6: Final answer
    x = 7,021.09

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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.