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Finding the Fourth Proportional to 8,519.39, 12,714.31 and 7,955.39

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Solution

The fourth proportional to 8,519.39, 12,714.31 and 7,955.39 is: 11,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.39 : 12,714.31 = 7,955.39 : x
  2. Step 2: Convert to fraction form
    8,519.39/12,714.31 = 7,955.39/x
  3. Step 3: Cross multiply
    8,519.39x = 12,714.31 × 7,955.39
  4. Step 4: Simplify right side
    8,519.39x = 101,147,254.85
  5. Step 5: Solve for x
    x = 101,147,254.85/8,519.39
  6. Step 6: Final answer
    x = 11,872.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.