Home / 3,942.24-5,913.69-1,309.65

Finding the Fourth Proportional to 3,942.24, 5,913.69 and 1,309.65

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Solution

The fourth proportional to 3,942.24, 5,913.69 and 1,309.65 is: 1,964.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.24 : 5,913.69 = 1,309.65 : x
  2. Step 2: Convert to fraction form
    3,942.24/5,913.69 = 1,309.65/x
  3. Step 3: Cross multiply
    3,942.24x = 5,913.69 × 1,309.65
  4. Step 4: Simplify right side
    3,942.24x = 7,744,864.11
  5. Step 5: Solve for x
    x = 7,744,864.11/3,942.24
  6. Step 6: Final answer
    x = 1,964.58

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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.