Home / 3,913.20-5,871.88-1,965.36

Finding the Fourth Proportional to 3,913.20, 5,871.88 and 1,965.36

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Solution

The fourth proportional to 3,913.20, 5,871.88 and 1,965.36 is: 2,949.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.20 : 5,871.88 = 1,965.36 : x
  2. Step 2: Convert to fraction form
    3,913.20/5,871.88 = 1,965.36/x
  3. Step 3: Cross multiply
    3,913.20x = 5,871.88 × 1,965.36
  4. Step 4: Simplify right side
    3,913.20x = 11,540,358.08
  5. Step 5: Solve for x
    x = 11,540,358.08/3,913.20
  6. Step 6: Final answer
    x = 2,949.08

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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.