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Finding the Fourth Proportional to 8,625.88, 12,929.10 and 4,234.06

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Solution

The fourth proportional to 8,625.88, 12,929.10 and 4,234.06 is: 6,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.88 : 12,929.10 = 4,234.06 : x
  2. Step 2: Convert to fraction form
    8,625.88/12,929.10 = 4,234.06/x
  3. Step 3: Cross multiply
    8,625.88x = 12,929.10 × 4,234.06
  4. Step 4: Simplify right side
    8,625.88x = 54,742,585.15
  5. Step 5: Solve for x
    x = 54,742,585.15/8,625.88
  6. Step 6: Final answer
    x = 6,346.32

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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.