Home / 8,720.28-13,085.99-3,173.09

Finding the Fourth Proportional to 8,720.28, 13,085.99 and 3,173.09

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Solution

The fourth proportional to 8,720.28, 13,085.99 and 3,173.09 is: 4,761.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.28 : 13,085.99 = 3,173.09 : x
  2. Step 2: Convert to fraction form
    8,720.28/13,085.99 = 3,173.09/x
  3. Step 3: Cross multiply
    8,720.28x = 13,085.99 × 3,173.09
  4. Step 4: Simplify right side
    8,720.28x = 41,523,024.01
  5. Step 5: Solve for x
    x = 41,523,024.01/8,720.28
  6. Step 6: Final answer
    x = 4,761.66

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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.