Home / 3,869.20-5,801.64-1,271.92

Finding the Fourth Proportional to 3,869.20, 5,801.64 and 1,271.92

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Solution

The fourth proportional to 3,869.20, 5,801.64 and 1,271.92 is: 1,907.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.20 : 5,801.64 = 1,271.92 : x
  2. Step 2: Convert to fraction form
    3,869.20/5,801.64 = 1,271.92/x
  3. Step 3: Cross multiply
    3,869.20x = 5,801.64 × 1,271.92
  4. Step 4: Simplify right side
    3,869.20x = 7,379,221.95
  5. Step 5: Solve for x
    x = 7,379,221.95/3,869.20
  6. Step 6: Final answer
    x = 1,907.17

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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.