Home / 2,849.72-3,931.47-1,855.85

Finding the Fourth Proportional to 2,849.72, 3,931.47 and 1,855.85

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Solution

The fourth proportional to 2,849.72, 3,931.47 and 1,855.85 is: 2,560.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,849.72 : 3,931.47 = 1,855.85 : x
  2. Step 2: Convert to fraction form
    2,849.72/3,931.47 = 1,855.85/x
  3. Step 3: Cross multiply
    2,849.72x = 3,931.47 × 1,855.85
  4. Step 4: Simplify right side
    2,849.72x = 7,296,198.94
  5. Step 5: Solve for x
    x = 7,296,198.94/2,849.72
  6. Step 6: Final answer
    x = 2,560.33

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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.