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Finding the Fourth Proportional to 7,988.88, 11,982.88 and 3,058.14

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Solution

The fourth proportional to 7,988.88, 11,982.88 and 3,058.14 is: 4,587.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.88 : 11,982.88 = 3,058.14 : x
  2. Step 2: Convert to fraction form
    7,988.88/11,982.88 = 3,058.14/x
  3. Step 3: Cross multiply
    7,988.88x = 11,982.88 × 3,058.14
  4. Step 4: Simplify right side
    7,988.88x = 36,645,324.64
  5. Step 5: Solve for x
    x = 36,645,324.64/7,988.88
  6. Step 6: Final answer
    x = 4,587.04

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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.