Home / 3,881.20-5,358.64-2,983.36

Finding the Fourth Proportional to 3,881.20, 5,358.64 and 2,983.36

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Solution

The fourth proportional to 3,881.20, 5,358.64 and 2,983.36 is: 4,119.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.20 : 5,358.64 = 2,983.36 : x
  2. Step 2: Convert to fraction form
    3,881.20/5,358.64 = 2,983.36/x
  3. Step 3: Cross multiply
    3,881.20x = 5,358.64 × 2,983.36
  4. Step 4: Simplify right side
    3,881.20x = 15,986,752.23
  5. Step 5: Solve for x
    x = 15,986,752.23/3,881.20
  6. Step 6: Final answer
    x = 4,119.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.