Home / 3,985.76-5,973.96-1,791.92

Finding the Fourth Proportional to 3,985.76, 5,973.96 and 1,791.92

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Solution

The fourth proportional to 3,985.76, 5,973.96 and 1,791.92 is: 2,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.76 : 5,973.96 = 1,791.92 : x
  2. Step 2: Convert to fraction form
    3,985.76/5,973.96 = 1,791.92/x
  3. Step 3: Cross multiply
    3,985.76x = 5,973.96 × 1,791.92
  4. Step 4: Simplify right side
    3,985.76x = 10,704,858.40
  5. Step 5: Solve for x
    x = 10,704,858.40/3,985.76
  6. Step 6: Final answer
    x = 2,685.78

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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.