Home / 8,721.97-13,091.18-3,180.67

Finding the Fourth Proportional to 8,721.97, 13,091.18 and 3,180.67

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Solution

The fourth proportional to 8,721.97, 13,091.18 and 3,180.67 is: 4,774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.97 : 13,091.18 = 3,180.67 : x
  2. Step 2: Convert to fraction form
    8,721.97/13,091.18 = 3,180.67/x
  3. Step 3: Cross multiply
    8,721.97x = 13,091.18 × 3,180.67
  4. Step 4: Simplify right side
    8,721.97x = 41,638,723.49
  5. Step 5: Solve for x
    x = 41,638,723.49/8,721.97
  6. Step 6: Final answer
    x = 4,774.00

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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.