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Finding the Fourth Proportional to 8,138.50, 11,231.13 and 4,412.50

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Solution

The fourth proportional to 8,138.50, 11,231.13 and 4,412.50 is: 6,089.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.50 : 11,231.13 = 4,412.50 : x
  2. Step 2: Convert to fraction form
    8,138.50/11,231.13 = 4,412.50/x
  3. Step 3: Cross multiply
    8,138.50x = 11,231.13 × 4,412.50
  4. Step 4: Simplify right side
    8,138.50x = 49,557,361.13
  5. Step 5: Solve for x
    x = 49,557,361.13/8,138.50
  6. Step 6: Final answer
    x = 6,089.25

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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.