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Finding the Fourth Proportional to 8,656.68, 12,999.60 and 8,588.64

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Solution

The fourth proportional to 8,656.68, 12,999.60 and 8,588.64 is: 12,897.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.68 : 12,999.60 = 8,588.64 : x
  2. Step 2: Convert to fraction form
    8,656.68/12,999.60 = 8,588.64/x
  3. Step 3: Cross multiply
    8,656.68x = 12,999.60 × 8,588.64
  4. Step 4: Simplify right side
    8,656.68x = 111,648,884.54
  5. Step 5: Solve for x
    x = 111,648,884.54/8,656.68
  6. Step 6: Final answer
    x = 12,897.43

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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.