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Finding the Fourth Proportional to 8,555.32, 12,837.06 and 4,659.64

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Solution

The fourth proportional to 8,555.32, 12,837.06 and 4,659.64 is: 6,991.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.32 : 12,837.06 = 4,659.64 : x
  2. Step 2: Convert to fraction form
    8,555.32/12,837.06 = 4,659.64/x
  3. Step 3: Cross multiply
    8,555.32x = 12,837.06 × 4,659.64
  4. Step 4: Simplify right side
    8,555.32x = 59,816,078.26
  5. Step 5: Solve for x
    x = 59,816,078.26/8,555.32
  6. Step 6: Final answer
    x = 6,991.68

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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.