Home / 8,654-12,983.28-3,108.56

Finding the Fourth Proportional to 8,654, 12,983.28 and 3,108.56

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Solution

The fourth proportional to 8,654, 12,983.28 and 3,108.56 is: 4,663.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654 : 12,983.28 = 3,108.56 : x
  2. Step 2: Convert to fraction form
    8,654/12,983.28 = 3,108.56/x
  3. Step 3: Cross multiply
    8,654x = 12,983.28 × 3,108.56
  4. Step 4: Simplify right side
    8,654x = 40,359,304.88
  5. Step 5: Solve for x
    x = 40,359,304.88/8,654
  6. Step 6: Final answer
    x = 4,663.66

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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.