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Finding the Fourth Proportional to 7,985.03, 11,978.99 and 3,302.50

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Solution

The fourth proportional to 7,985.03, 11,978.99 and 3,302.50 is: 4,954.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.03 : 11,978.99 = 3,302.50 : x
  2. Step 2: Convert to fraction form
    7,985.03/11,978.99 = 3,302.50/x
  3. Step 3: Cross multiply
    7,985.03x = 11,978.99 × 3,302.50
  4. Step 4: Simplify right side
    7,985.03x = 39,560,592.78
  5. Step 5: Solve for x
    x = 39,560,592.78/7,985.03
  6. Step 6: Final answer
    x = 4,954.34

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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.