Home / 3,424.16-5,136.72-1,115.12

Finding the Fourth Proportional to 3,424.16, 5,136.72 and 1,115.12

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Solution

The fourth proportional to 3,424.16, 5,136.72 and 1,115.12 is: 1,672.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.16 : 5,136.72 = 1,115.12 : x
  2. Step 2: Convert to fraction form
    3,424.16/5,136.72 = 1,115.12/x
  3. Step 3: Cross multiply
    3,424.16x = 5,136.72 × 1,115.12
  4. Step 4: Simplify right side
    3,424.16x = 5,728,059.21
  5. Step 5: Solve for x
    x = 5,728,059.21/3,424.16
  6. Step 6: Final answer
    x = 1,672.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.