Home / 8,720.34-13,083.21-3,021.79

Finding the Fourth Proportional to 8,720.34, 13,083.21 and 3,021.79

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Solution

The fourth proportional to 8,720.34, 13,083.21 and 3,021.79 is: 4,533.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.34 : 13,083.21 = 3,021.79 : x
  2. Step 2: Convert to fraction form
    8,720.34/13,083.21 = 3,021.79/x
  3. Step 3: Cross multiply
    8,720.34x = 13,083.21 × 3,021.79
  4. Step 4: Simplify right side
    8,720.34x = 39,534,672.88
  5. Step 5: Solve for x
    x = 39,534,672.88/8,720.34
  6. Step 6: Final answer
    x = 4,533.62

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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.