Home / 8,707.88-13,061.78-3,161.21

Finding the Fourth Proportional to 8,707.88, 13,061.78 and 3,161.21

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Solution

The fourth proportional to 8,707.88, 13,061.78 and 3,161.21 is: 4,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.88 : 13,061.78 = 3,161.21 : x
  2. Step 2: Convert to fraction form
    8,707.88/13,061.78 = 3,161.21/x
  3. Step 3: Cross multiply
    8,707.88x = 13,061.78 × 3,161.21
  4. Step 4: Simplify right side
    8,707.88x = 41,290,948.44
  5. Step 5: Solve for x
    x = 41,290,948.44/8,707.88
  6. Step 6: Final answer
    x = 4,741.79

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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.