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Finding the Fourth Proportional to 5,921.07, 8,154.47 and 5,791.91

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Solution

The fourth proportional to 5,921.07, 8,154.47 and 5,791.91 is: 7,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.07 : 8,154.47 = 5,791.91 : x
  2. Step 2: Convert to fraction form
    5,921.07/8,154.47 = 5,791.91/x
  3. Step 3: Cross multiply
    5,921.07x = 8,154.47 × 5,791.91
  4. Step 4: Simplify right side
    5,921.07x = 47,229,886.61
  5. Step 5: Solve for x
    x = 47,229,886.61/5,921.07
  6. Step 6: Final answer
    x = 7,976.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.