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Finding the Fourth Proportional to 11,765.51, 17,651.51 and 3,979.79

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Solution

The fourth proportional to 11,765.51, 17,651.51 and 3,979.79 is: 5,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.51 : 17,651.51 = 3,979.79 : x
  2. Step 2: Convert to fraction form
    11,765.51/17,651.51 = 3,979.79/x
  3. Step 3: Cross multiply
    11,765.51x = 17,651.51 × 3,979.79
  4. Step 4: Simplify right side
    11,765.51x = 70,249,283.08
  5. Step 5: Solve for x
    x = 70,249,283.08/11,765.51
  6. Step 6: Final answer
    x = 5,970.78

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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.