Home / 11,743.90-17,615.86-2,978.82

Finding the Fourth Proportional to 11,743.90, 17,615.86 and 2,978.82

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Solution

The fourth proportional to 11,743.90, 17,615.86 and 2,978.82 is: 4,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,743.90 : 17,615.86 = 2,978.82 : x
  2. Step 2: Convert to fraction form
    11,743.90/17,615.86 = 2,978.82/x
  3. Step 3: Cross multiply
    11,743.90x = 17,615.86 × 2,978.82
  4. Step 4: Simplify right side
    11,743.90x = 52,474,476.09
  5. Step 5: Solve for x
    x = 52,474,476.09/11,743.90
  6. Step 6: Final answer
    x = 4,468.23

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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.