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Finding the Fourth Proportional to 8,418.29, 12,635.94 and 7,590.88

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Solution

The fourth proportional to 8,418.29, 12,635.94 and 7,590.88 is: 11,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.29 : 12,635.94 = 7,590.88 : x
  2. Step 2: Convert to fraction form
    8,418.29/12,635.94 = 7,590.88/x
  3. Step 3: Cross multiply
    8,418.29x = 12,635.94 × 7,590.88
  4. Step 4: Simplify right side
    8,418.29x = 95,917,841.05
  5. Step 5: Solve for x
    x = 95,917,841.05/8,418.29
  6. Step 6: Final answer
    x = 11,393.98

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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.