Home / 7,421.49-11,132.82-2,491.11

Finding the Fourth Proportional to 7,421.49, 11,132.82 and 2,491.11

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Solution

The fourth proportional to 7,421.49, 11,132.82 and 2,491.11 is: 3,736.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.49 : 11,132.82 = 2,491.11 : x
  2. Step 2: Convert to fraction form
    7,421.49/11,132.82 = 2,491.11/x
  3. Step 3: Cross multiply
    7,421.49x = 11,132.82 × 2,491.11
  4. Step 4: Simplify right side
    7,421.49x = 27,733,079.23
  5. Step 5: Solve for x
    x = 27,733,079.23/7,421.49
  6. Step 6: Final answer
    x = 3,736.86

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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.