Home / 8,420.55-12,634.26-3,489.27

Finding the Fourth Proportional to 8,420.55, 12,634.26 and 3,489.27

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Solution

The fourth proportional to 8,420.55, 12,634.26 and 3,489.27 is: 5,235.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.55 : 12,634.26 = 3,489.27 : x
  2. Step 2: Convert to fraction form
    8,420.55/12,634.26 = 3,489.27/x
  3. Step 3: Cross multiply
    8,420.55x = 12,634.26 × 3,489.27
  4. Step 4: Simplify right side
    8,420.55x = 44,084,344.39
  5. Step 5: Solve for x
    x = 44,084,344.39/8,420.55
  6. Step 6: Final answer
    x = 5,235.33

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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.