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Finding the Fourth Proportional to 8,939.08, 12,333.90 and 5,213.08

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Solution

The fourth proportional to 8,939.08, 12,333.90 and 5,213.08 is: 7,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.08 : 12,333.90 = 5,213.08 : x
  2. Step 2: Convert to fraction form
    8,939.08/12,333.90 = 5,213.08/x
  3. Step 3: Cross multiply
    8,939.08x = 12,333.90 × 5,213.08
  4. Step 4: Simplify right side
    8,939.08x = 64,297,607.41
  5. Step 5: Solve for x
    x = 64,297,607.41/8,939.08
  6. Step 6: Final answer
    x = 7,192.87

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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.