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Finding the Fourth Proportional to 3,609.87, 5,415.06 and 1,144.86

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Solution

The fourth proportional to 3,609.87, 5,415.06 and 1,144.86 is: 1,717.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.87 : 5,415.06 = 1,144.86 : x
  2. Step 2: Convert to fraction form
    3,609.87/5,415.06 = 1,144.86/x
  3. Step 3: Cross multiply
    3,609.87x = 5,415.06 × 1,144.86
  4. Step 4: Simplify right side
    3,609.87x = 6,199,485.59
  5. Step 5: Solve for x
    x = 6,199,485.59/3,609.87
  6. Step 6: Final answer
    x = 1,717.37

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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.