Home / 3,942.36-5,913.86-1,309.77

Finding the Fourth Proportional to 3,942.36, 5,913.86 and 1,309.77

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Solution

The fourth proportional to 3,942.36, 5,913.86 and 1,309.77 is: 1,964.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.36 : 5,913.86 = 1,309.77 : x
  2. Step 2: Convert to fraction form
    3,942.36/5,913.86 = 1,309.77/x
  3. Step 3: Cross multiply
    3,942.36x = 5,913.86 × 1,309.77
  4. Step 4: Simplify right side
    3,942.36x = 7,745,789.86
  5. Step 5: Solve for x
    x = 7,745,789.86/3,942.36
  6. Step 6: Final answer
    x = 1,964.76

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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.