Home / 8,720.25-13,083.07-3,021.69

Finding the Fourth Proportional to 8,720.25, 13,083.07 and 3,021.69

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Solution

The fourth proportional to 8,720.25, 13,083.07 and 3,021.69 is: 4,533.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.25 : 13,083.07 = 3,021.69 : x
  2. Step 2: Convert to fraction form
    8,720.25/13,083.07 = 3,021.69/x
  3. Step 3: Cross multiply
    8,720.25x = 13,083.07 × 3,021.69
  4. Step 4: Simplify right side
    8,720.25x = 39,532,981.79
  5. Step 5: Solve for x
    x = 39,532,981.79/8,720.25
  6. Step 6: Final answer
    x = 4,533.47

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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.