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Finding the Fourth Proportional to 8,623, 11,905.32 and 6,731.32

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Solution

The fourth proportional to 8,623, 11,905.32 and 6,731.32 is: 9,293.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623 : 11,905.32 = 6,731.32 : x
  2. Step 2: Convert to fraction form
    8,623/11,905.32 = 6,731.32/x
  3. Step 3: Cross multiply
    8,623x = 11,905.32 × 6,731.32
  4. Step 4: Simplify right side
    8,623x = 80,138,518.62
  5. Step 5: Solve for x
    x = 80,138,518.62/8,623
  6. Step 6: Final answer
    x = 9,293.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.