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Finding the Fourth Proportional to 8,664.50, 12,988.89 and 4,499.64

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Solution

The fourth proportional to 8,664.50, 12,988.89 and 4,499.64 is: 6,745.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.50 : 12,988.89 = 4,499.64 : x
  2. Step 2: Convert to fraction form
    8,664.50/12,988.89 = 4,499.64/x
  3. Step 3: Cross multiply
    8,664.50x = 12,988.89 × 4,499.64
  4. Step 4: Simplify right side
    8,664.50x = 58,445,329.00
  5. Step 5: Solve for x
    x = 58,445,329.00/8,664.50
  6. Step 6: Final answer
    x = 6,745.38

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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.