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Finding the Fourth Proportional to 7,796.76, 11,700.40 and 3,411.68

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Solution

The fourth proportional to 7,796.76, 11,700.40 and 3,411.68 is: 5,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,796.76 : 11,700.40 = 3,411.68 : x
  2. Step 2: Convert to fraction form
    7,796.76/11,700.40 = 3,411.68/x
  3. Step 3: Cross multiply
    7,796.76x = 11,700.40 × 3,411.68
  4. Step 4: Simplify right side
    7,796.76x = 39,918,020.67
  5. Step 5: Solve for x
    x = 39,918,020.67/7,796.76
  6. Step 6: Final answer
    x = 5,119.82

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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.