Home / 3,983.49-5,975.28-1,386.45

Finding the Fourth Proportional to 3,983.49, 5,975.28 and 1,386.45

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Solution

The fourth proportional to 3,983.49, 5,975.28 and 1,386.45 is: 2,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.49 : 5,975.28 = 1,386.45 : x
  2. Step 2: Convert to fraction form
    3,983.49/5,975.28 = 1,386.45/x
  3. Step 3: Cross multiply
    3,983.49x = 5,975.28 × 1,386.45
  4. Step 4: Simplify right side
    3,983.49x = 8,284,426.96
  5. Step 5: Solve for x
    x = 8,284,426.96/3,983.49
  6. Step 6: Final answer
    x = 2,079.69

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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.