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Finding the Fourth Proportional to 8,690.73, 11,992.30 and 5,333.68

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Solution

The fourth proportional to 8,690.73, 11,992.30 and 5,333.68 is: 7,359.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.73 : 11,992.30 = 5,333.68 : x
  2. Step 2: Convert to fraction form
    8,690.73/11,992.30 = 5,333.68/x
  3. Step 3: Cross multiply
    8,690.73x = 11,992.30 × 5,333.68
  4. Step 4: Simplify right side
    8,690.73x = 63,963,090.66
  5. Step 5: Solve for x
    x = 63,963,090.66/8,690.73
  6. Step 6: Final answer
    x = 7,359.93

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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.