Home / 9,311.29-13,969.82-2,987.11

Finding the Fourth Proportional to 9,311.29, 13,969.82 and 2,987.11

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Solution

The fourth proportional to 9,311.29, 13,969.82 and 2,987.11 is: 4,481.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,311.29 : 13,969.82 = 2,987.11 : x
  2. Step 2: Convert to fraction form
    9,311.29/13,969.82 = 2,987.11/x
  3. Step 3: Cross multiply
    9,311.29x = 13,969.82 × 2,987.11
  4. Step 4: Simplify right side
    9,311.29x = 41,729,389.02
  5. Step 5: Solve for x
    x = 41,729,389.02/9,311.29
  6. Step 6: Final answer
    x = 4,481.59

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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.