Home / 8,689.44-13,034.34-2,115.66

Finding the Fourth Proportional to 8,689.44, 13,034.34 and 2,115.66

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Solution

The fourth proportional to 8,689.44, 13,034.34 and 2,115.66 is: 3,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.44 : 13,034.34 = 2,115.66 : x
  2. Step 2: Convert to fraction form
    8,689.44/13,034.34 = 2,115.66/x
  3. Step 3: Cross multiply
    8,689.44x = 13,034.34 × 2,115.66
  4. Step 4: Simplify right side
    8,689.44x = 27,576,231.76
  5. Step 5: Solve for x
    x = 27,576,231.76/8,689.44
  6. Step 6: Final answer
    x = 3,173.53

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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.