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Finding the Fourth Proportional to 7,842.84, 11,763 and 2,576.28

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Solution

The fourth proportional to 7,842.84, 11,763 and 2,576.28 is: 3,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.84 : 11,763 = 2,576.28 : x
  2. Step 2: Convert to fraction form
    7,842.84/11,763 = 2,576.28/x
  3. Step 3: Cross multiply
    7,842.84x = 11,763 × 2,576.28
  4. Step 4: Simplify right side
    7,842.84x = 30,304,781.64
  5. Step 5: Solve for x
    x = 30,304,781.64/7,842.84
  6. Step 6: Final answer
    x = 3,864.01

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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.