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Finding the Fourth Proportional to 8,262.34, 12,390.88 and 2,714.39

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Solution

The fourth proportional to 8,262.34, 12,390.88 and 2,714.39 is: 4,070.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,262.34 : 12,390.88 = 2,714.39 : x
  2. Step 2: Convert to fraction form
    8,262.34/12,390.88 = 2,714.39/x
  3. Step 3: Cross multiply
    8,262.34x = 12,390.88 × 2,714.39
  4. Step 4: Simplify right side
    8,262.34x = 33,633,680.76
  5. Step 5: Solve for x
    x = 33,633,680.76/8,262.34
  6. Step 6: Final answer
    x = 4,070.72

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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.