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Finding the Fourth Proportional to 8,536.32, 12,787.20 and 6,670.08

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Solution

The fourth proportional to 8,536.32, 12,787.20 and 6,670.08 is: 9,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,536.32 : 12,787.20 = 6,670.08 : x
  2. Step 2: Convert to fraction form
    8,536.32/12,787.20 = 6,670.08/x
  3. Step 3: Cross multiply
    8,536.32x = 12,787.20 × 6,670.08
  4. Step 4: Simplify right side
    8,536.32x = 85,291,646.98
  5. Step 5: Solve for x
    x = 85,291,646.98/8,536.32
  6. Step 6: Final answer
    x = 9,991.62

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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.