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Finding the Fourth Proportional to 7,907.71, 11,862.08 and 3,957.79

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Solution

The fourth proportional to 7,907.71, 11,862.08 and 3,957.79 is: 5,936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.71 : 11,862.08 = 3,957.79 : x
  2. Step 2: Convert to fraction form
    7,907.71/11,862.08 = 3,957.79/x
  3. Step 3: Cross multiply
    7,907.71x = 11,862.08 × 3,957.79
  4. Step 4: Simplify right side
    7,907.71x = 46,947,592.58
  5. Step 5: Solve for x
    x = 46,947,592.58/7,907.71
  6. Step 6: Final answer
    x = 5,936.94

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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.