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Finding the Fourth Proportional to 7,770.10, 11,659.60 and 2,839.08

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Solution

The fourth proportional to 7,770.10, 11,659.60 and 2,839.08 is: 4,260.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.10 : 11,659.60 = 2,839.08 : x
  2. Step 2: Convert to fraction form
    7,770.10/11,659.60 = 2,839.08/x
  3. Step 3: Cross multiply
    7,770.10x = 11,659.60 × 2,839.08
  4. Step 4: Simplify right side
    7,770.10x = 33,102,537.17
  5. Step 5: Solve for x
    x = 33,102,537.17/7,770.10
  6. Step 6: Final answer
    x = 4,260.25

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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.