Home / 3,928-5,891.56-1,154.70

Finding the Fourth Proportional to 3,928, 5,891.56 and 1,154.70

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Solution

The fourth proportional to 3,928, 5,891.56 and 1,154.70 is: 1,731.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928 : 5,891.56 = 1,154.70 : x
  2. Step 2: Convert to fraction form
    3,928/5,891.56 = 1,154.70/x
  3. Step 3: Cross multiply
    3,928x = 5,891.56 × 1,154.70
  4. Step 4: Simplify right side
    3,928x = 6,802,984.33
  5. Step 5: Solve for x
    x = 6,802,984.33/3,928
  6. Step 6: Final answer
    x = 1,731.92

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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.