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Finding the Fourth Proportional to 3,072.48, 4,609.32 and 881.22

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Solution

The fourth proportional to 3,072.48, 4,609.32 and 881.22 is: 1,322.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.48 : 4,609.32 = 881.22 : x
  2. Step 2: Convert to fraction form
    3,072.48/4,609.32 = 881.22/x
  3. Step 3: Cross multiply
    3,072.48x = 4,609.32 × 881.22
  4. Step 4: Simplify right side
    3,072.48x = 4,061,824.97
  5. Step 5: Solve for x
    x = 4,061,824.97/3,072.48
  6. Step 6: Final answer
    x = 1,322.00

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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.