Home / 5,412-8,118.52-2,491.12

Finding the Fourth Proportional to 5,412, 8,118.52 and 2,491.12

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Solution

The fourth proportional to 5,412, 8,118.52 and 2,491.12 is: 3,736.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412 : 8,118.52 = 2,491.12 : x
  2. Step 2: Convert to fraction form
    5,412/8,118.52 = 2,491.12/x
  3. Step 3: Cross multiply
    5,412x = 8,118.52 × 2,491.12
  4. Step 4: Simplify right side
    5,412x = 20,224,207.54
  5. Step 5: Solve for x
    x = 20,224,207.54/5,412
  6. Step 6: Final answer
    x = 3,736.92

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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.