Home / 3,928.14-5,890.73-1,979.01

Finding the Fourth Proportional to 3,928.14, 5,890.73 and 1,979.01

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Solution

The fourth proportional to 3,928.14, 5,890.73 and 1,979.01 is: 2,967.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.14 : 5,890.73 = 1,979.01 : x
  2. Step 2: Convert to fraction form
    3,928.14/5,890.73 = 1,979.01/x
  3. Step 3: Cross multiply
    3,928.14x = 5,890.73 × 1,979.01
  4. Step 4: Simplify right side
    3,928.14x = 11,657,803.68
  5. Step 5: Solve for x
    x = 11,657,803.68/3,928.14
  6. Step 6: Final answer
    x = 2,967.77

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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.