Home / 8,721.41-13,081.92-2,798.06

Finding the Fourth Proportional to 8,721.41, 13,081.92 and 2,798.06

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Solution

The fourth proportional to 8,721.41, 13,081.92 and 2,798.06 is: 4,197.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.41 : 13,081.92 = 2,798.06 : x
  2. Step 2: Convert to fraction form
    8,721.41/13,081.92 = 2,798.06/x
  3. Step 3: Cross multiply
    8,721.41x = 13,081.92 × 2,798.06
  4. Step 4: Simplify right side
    8,721.41x = 36,604,010.50
  5. Step 5: Solve for x
    x = 36,604,010.50/8,721.41
  6. Step 6: Final answer
    x = 4,197.03

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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.