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Finding the Fourth Proportional to 8,663.92, 12,995.76 and 2,090.06

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Solution

The fourth proportional to 8,663.92, 12,995.76 and 2,090.06 is: 3,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.92 : 12,995.76 = 2,090.06 : x
  2. Step 2: Convert to fraction form
    8,663.92/12,995.76 = 2,090.06/x
  3. Step 3: Cross multiply
    8,663.92x = 12,995.76 × 2,090.06
  4. Step 4: Simplify right side
    8,663.92x = 27,161,918.15
  5. Step 5: Solve for x
    x = 27,161,918.15/8,663.92
  6. Step 6: Final answer
    x = 3,135.06

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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.