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Finding the Fourth Proportional to 11,858.71, 17,789.08 and 3,538.19

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Solution

The fourth proportional to 11,858.71, 17,789.08 and 3,538.19 is: 5,307.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858.71 : 17,789.08 = 3,538.19 : x
  2. Step 2: Convert to fraction form
    11,858.71/17,789.08 = 3,538.19/x
  3. Step 3: Cross multiply
    11,858.71x = 17,789.08 × 3,538.19
  4. Step 4: Simplify right side
    11,858.71x = 62,941,144.97
  5. Step 5: Solve for x
    x = 62,941,144.97/11,858.71
  6. Step 6: Final answer
    x = 5,307.59

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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.