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Finding the Fourth Proportional to 8,508.13, 12,730.12 and 7,644.85

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Solution

The fourth proportional to 8,508.13, 12,730.12 and 7,644.85 is: 11,438.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.13 : 12,730.12 = 7,644.85 : x
  2. Step 2: Convert to fraction form
    8,508.13/12,730.12 = 7,644.85/x
  3. Step 3: Cross multiply
    8,508.13x = 12,730.12 × 7,644.85
  4. Step 4: Simplify right side
    8,508.13x = 97,319,857.88
  5. Step 5: Solve for x
    x = 97,319,857.88/8,508.13
  6. Step 6: Final answer
    x = 11,438.45

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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.