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Finding the Fourth Proportional to 7,985.74, 11,980.93 and 3,304.89

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Solution

The fourth proportional to 7,985.74, 11,980.93 and 3,304.89 is: 4,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.74 : 11,980.93 = 3,304.89 : x
  2. Step 2: Convert to fraction form
    7,985.74/11,980.93 = 3,304.89/x
  3. Step 3: Cross multiply
    7,985.74x = 11,980.93 × 3,304.89
  4. Step 4: Simplify right side
    7,985.74x = 39,595,655.75
  5. Step 5: Solve for x
    x = 39,595,655.75/7,985.74
  6. Step 6: Final answer
    x = 4,958.30

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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.