Home / 3,983.41-5,975.05-1,386.28

Finding the Fourth Proportional to 3,983.41, 5,975.05 and 1,386.28

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Solution

The fourth proportional to 3,983.41, 5,975.05 and 1,386.28 is: 2,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.41 : 5,975.05 = 1,386.28 : x
  2. Step 2: Convert to fraction form
    3,983.41/5,975.05 = 1,386.28/x
  3. Step 3: Cross multiply
    3,983.41x = 5,975.05 × 1,386.28
  4. Step 4: Simplify right side
    3,983.41x = 8,283,098.92
  5. Step 5: Solve for x
    x = 8,283,098.92/3,983.41
  6. Step 6: Final answer
    x = 2,079.40

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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.