Home / 7,618.25-11,427.28-2,072.12

Finding the Fourth Proportional to 7,618.25, 11,427.28 and 2,072.12

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Solution

The fourth proportional to 7,618.25, 11,427.28 and 2,072.12 is: 3,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.25 : 11,427.28 = 2,072.12 : x
  2. Step 2: Convert to fraction form
    7,618.25/11,427.28 = 2,072.12/x
  3. Step 3: Cross multiply
    7,618.25x = 11,427.28 × 2,072.12
  4. Step 4: Simplify right side
    7,618.25x = 23,678,633.12
  5. Step 5: Solve for x
    x = 23,678,633.12/7,618.25
  6. Step 6: Final answer
    x = 3,108.14

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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.