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Finding the Fourth Proportional to 3,988.75, 5,984.09 and 1,252.75

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Solution

The fourth proportional to 3,988.75, 5,984.09 and 1,252.75 is: 1,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.75 : 5,984.09 = 1,252.75 : x
  2. Step 2: Convert to fraction form
    3,988.75/5,984.09 = 1,252.75/x
  3. Step 3: Cross multiply
    3,988.75x = 5,984.09 × 1,252.75
  4. Step 4: Simplify right side
    3,988.75x = 7,496,568.75
  5. Step 5: Solve for x
    x = 7,496,568.75/3,988.75
  6. Step 6: Final answer
    x = 1,879.43

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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.