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Finding the Fourth Proportional to 3,072.05, 4,608.96 and 992.01

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Solution

The fourth proportional to 3,072.05, 4,608.96 and 992.01 is: 1,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.05 : 4,608.96 = 992.01 : x
  2. Step 2: Convert to fraction form
    3,072.05/4,608.96 = 992.01/x
  3. Step 3: Cross multiply
    3,072.05x = 4,608.96 × 992.01
  4. Step 4: Simplify right side
    3,072.05x = 4,572,134.41
  5. Step 5: Solve for x
    x = 4,572,134.41/3,072.05
  6. Step 6: Final answer
    x = 1,488.30

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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.