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Finding the Fourth Proportional to 7,674.40, 11,507.82 and 2,479.60

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Solution

The fourth proportional to 7,674.40, 11,507.82 and 2,479.60 is: 3,718.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,674.40 : 11,507.82 = 2,479.60 : x
  2. Step 2: Convert to fraction form
    7,674.40/11,507.82 = 2,479.60/x
  3. Step 3: Cross multiply
    7,674.40x = 11,507.82 × 2,479.60
  4. Step 4: Simplify right side
    7,674.40x = 28,534,790.47
  5. Step 5: Solve for x
    x = 28,534,790.47/7,674.40
  6. Step 6: Final answer
    x = 3,718.18

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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.