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Finding the Fourth Proportional to 8,592.88, 12,876.36 and 6,391.28

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Solution

The fourth proportional to 8,592.88, 12,876.36 and 6,391.28 is: 9,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.88 : 12,876.36 = 6,391.28 : x
  2. Step 2: Convert to fraction form
    8,592.88/12,876.36 = 6,391.28/x
  3. Step 3: Cross multiply
    8,592.88x = 12,876.36 × 6,391.28
  4. Step 4: Simplify right side
    8,592.88x = 82,296,422.14
  5. Step 5: Solve for x
    x = 82,296,422.14/8,592.88
  6. Step 6: Final answer
    x = 9,577.28

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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.