Home / 6,520.26-9,781.80-2,137.56

Finding the Fourth Proportional to 6,520.26, 9,781.80 and 2,137.56

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Solution

The fourth proportional to 6,520.26, 9,781.80 and 2,137.56 is: 3,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.26 : 9,781.80 = 2,137.56 : x
  2. Step 2: Convert to fraction form
    6,520.26/9,781.80 = 2,137.56/x
  3. Step 3: Cross multiply
    6,520.26x = 9,781.80 × 2,137.56
  4. Step 4: Simplify right side
    6,520.26x = 20,909,184.41
  5. Step 5: Solve for x
    x = 20,909,184.41/6,520.26
  6. Step 6: Final answer
    x = 3,206.80

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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.